The Big Bang Theory
The Big Bang Theorymade a spattering with fans who could n’t get enough of the friendly relationship between Sheldon , Leonard , Howard , and Raj . The inclusion of their wife and girlfriend in later season only added to the show ’s hilarity .
Throughout the halls of Caltech and the street of Pasadena , the A - list guest virtuoso that graced the show was also what madeTBBTexciting to watch . While some guest maven were famous before the show , others grew their fame years after appearing .
Updated on April 25th , 2022 , by Lynn Gibbs : Although The Big Bang Theory focalize on its core group group of characters , side fibre and guest whiz were add up throughout . From legendary names in the field of science to Star Trek actors , it was fun for TV audience to see which star they ’d have on next . Some guest stars appeared on the serial before they made the large - time , which made rewatching the serial all the more sport .
Carrie Fisher As Herself
In the episode ‘ The Convention Conundrum , ’ Sheldon spend the nighttime withStar Warsactor James Earl Jones . The two break out to eat , run to a fair , and later played Ding Dong Ditch at Carrie Fisher ’s menage .
James and Sheldon surround her buzzer and then excitedly hunt aside when she shew up at the door with a baseball game bat . However , as soon as Fisher opened the door and James , she was in no laugh mood . She screamed , “ It ’s not rummy James ! ” As he and Sheldon laughed while running away . Fisher ’s cameo was so minuscule that mostTBBTfans forgot she was in an instalment . Fisher passed away in 2016 but will forever be known for her function as Princess Leia in theStar Warsfranchise .
Jodi Lyn O’Keefe As Mikayla
Jodi Lyn O’Keefe is most known for her roles inPrison Break , The Vampire Diaries , andShe ’s All That . Instead of portraying herself like a few other stars on this list , O’Keefe played a Las Vegas prostitute diagnose Mikayla .
In the episode ‘ The Vegas Renormalization , ’ Leslie Winkle broke up with Howard and he was sad that he was alone yet again . After their schism , Howard got worse and worsebefore he got better . Since they were in Las Vegas , Leonard and Raj wanted to boost his sureness so they hired Mikayla to philander and catch some Z’s with Howard . know as “ the boyfriend experience , ” Howard did n’t realize she was a hired sexual activity proletarian until after their conversation , but he could n’t even be frantic at his friends because he needed the company .
Rick Fox As Glenn
Rick Fox only star in one episode , ‘ The Love Car Displacement . ’ Fox is a former NBA - star turn actor who has been in shows likeOne Tree Hill , OZ , andMelrose Place .
In the episode , Fox play Bernadette ’s former professor and ex-husband - boyfriend Glenn . The two scarper into each other at a group discussion and Howard was directly intimidated by Glenn ’s stature and dear looks . Howard ’s response to Bernadette and Glenn once dating put him in boiling water and gaveBernadette some of her most savage consequence . At the end of the episode , Leonard felt what Howard was feeling when Glenn drive centime back to Las Angeles and was jealous something was going to happen between the two of them .
Jessica Walter As Mrs. Latham
In ‘ The Benefactor Factor , ” actress Jessica Walter played Mrs. Latham , a university giver concerned in Leonard ’s work . Her involvement inLeonard ’s work made him seem the smartestin the radical , much to Sheldon ’s chagrin .
As an older , well-thought-of woman with a lot of money , Leonard and co. were intimidate by her power . But when Mrs. Latham take Leonard out to dinner to talk about his body of work , he felt like he had to for the safe of his life history . In a scandalous twist , Mrs. Latham flirted with Leonard and made it clear she want a amorous evening with him . The two ended up sleeping together and the following morning Leonard ’s department was given a donation . Walter sadly passed away in 2021 but will perpetually be known for her roles inArrested DevelopmentandArcher .
Howie Mandel As Himself
Howie Mandel is a TV personality known for authorship , act , and hosting . Due to his name , he appear in the episode where Howard ( or as Bernadette called him , Howie ) return home from space .
When Howard catch off the plane , there was a radical of paparazzo snapping his pic , calling out “ Howie ! ” Howard wave and thank them for come in but what he did n’t know was that Howie Mandel was right behind him . When Howard realized his welcoming was n’t as grand as he expected , he got upset that his friends were n’t there for support .
Danica McKellar As Abby
Danica McKellar is most known for starring inThe Wonder Years , but she ’s still acting today , appear in a ton of TV movies and shows .
OnTheBig Bang Theory , she appear in ' The Psychic Vortex . ' The installment had Sheldon join Raj as his wingman when he was tired of being solitary . Raj matured inThe Big Bang Theoryby putting himself out there in the date earthly concern instead of stay home out of fear . While many think this idea would blow up in smoke , it influence in Raj ’s favor . McKellar dally a charwoman named Abby who ended up fail home with Raj after hitting it off at the Browning automatic rifle . woefully , Abby never come back after that one episode .
Charlie Sheen As Himself
Actor Charlie Sheen pop up up in ' The Griffin Equivalency ' during an important moment in Raj ’s life .
In the installment , Raj was choose as one of People Magazine ’s 30 under 30 people to see . The accomplishment went to his head and he started act other than around his friends . Leonard , Sheldon , and Howard could n’t stand to be around his pompous vigour , which led Raj to tell a random person at the bar that he was going to be in People Magazine . Sheen lento turn around and say , " Yeah , call me when you ’re on the top . " This , of path , is about Sheen being a tabloid power .
Eliza Dushku As Agent Angela Page
WhileHoward and Sheldon eventually rule commonground onTBBT , they were n’t always respectful of each other . In the installment ' The Apology Insufficiency , ' Howard had the chance to work for NASA but needed security measure headway .
Agent Angela Page visited Sheldon , Raj , and Leonard to make more perspective on the kind of person Howard was . But after Sheldon and the chemical group gave bad data , Angela never approve Howard ’s headway . Agent Page was played by actress Eliza Dushku . Dushku is most eff as Missy inBring It On , but she ’s also been on the TV seriesHulk and the Agents of S.M.A.S.H. , Tru Calling , andBuffy the Vampire Slayer .
Judy Greer As Dr. Elizabeth Plimpton
Judy Greer has been in everything fromAnt - Man , 13 Going On 30 , and Modern Family — she was also in an sequence ofThe Big Bang Theory . Greer make for Dr. Elizabeth Plimpton in the episode ' The Plimpton Stimulation . '
As a cosmological physicist , Plimpton stayed with Sheldon and Leonard when she was in townspeople for a group discussion . Leonard was star - struck when he met her because he take her book and followed her piece of work . Surprisingly , Leonard and Plimpton sleep together after coming together — shortly after violate up from Penny . Leonard wanted a family relationship with Plimpton but he soon learn that she also tried sleeping with Raj and Howard .
Octavia Spencer As The DMV Worker
Iconic actress Octavia Spencer appeared inTBBTas a invitee star in the instalment ' The Euclid Alternative . ' In the installment , the group of acquaintance were threadbare of ram Sheldon everywhere and forced him to get his permission .
At the DMV , Sheldon questioned Spencer ’s character about the test , which bother her because he was obligate up the line . Like most strangers who encountered Sheldon for the first sentence , she was confused and annoyed by him . Her time in the show was short but she ’s most bang for her unbelievable film likeThe Help , Hidden figure , andThe Shack .
Summer Galu As Herself
In ' The Terminator Decoupling , ' Sheldon , Howard , Raj , and Leonard were on a train head to a conference when they sawFireflyactress Summer Glau . Everyone but Sheldon brainstormed how they would introduce themselves .
Eventually , Raj dare to make a move and the two shared a short conversation until Howard got ask . Howard thought of an inappropriate pick - upline to make his mark on Summer but it did n’t act upon . Summer did n’t require anything to do with Howard and quickly got off the train after a few selfies with him . Summer did n’t have too many lines , but fan of hers recognize her fromGrey ’s Anatomy , Terminator : The Sarah Connor Chronicles , andArrow .
Judd Hirsch As Albert Hofstadter
Appearing in one episode in the 9th season as Dr. Alfred Hofstadter , actor Judd Hirsch starred as Leonard ’s successful dada . Although his dad is mentioned often throughout the season , viewers never saw him until Leonard and Penny ’s relationship timeline took them to their second marriage .
In this episode , viewers finally got to see Leonard ’s dad interact with his aggressive mother . Beverly Hofstadter ripped Albert ’s name to smidgin every chance she got when she was on covert , but in world , he was a loving and wizardly man .
Jerry O’Connell As George Cooper Jr.
Viewers never think they ’d meet Sheldon ’s older buddy George but it happened before his marriage to Amy . Sheldon ’s mom did n’t want him to get married without the financial support of his brother , so they were pull to make amends after a toxic relationship .
He first appeared in ' The Sibling Realignment ' and was later seen happily at the wedding party . Jerry O’Connell is most know for his hit ' eighty movieStand by Mebut he ’s also been inSlidersandScream 2 .
George Takei As Himself
The amazing affair aboutThe Big Bang Theoryis that guest mavin from various shows and movies mentioned popped up from time to time . In one case , Star Trek’sGeorge Takei look in season 4 as an fanciful shape in Howard ’s fantasy .
While Howard tried have a bedtime fantasy aboutBattlestar Galactica’sKatee Sackhoff , George Takei invaded the visual sensation and gave Howard some dating advice . While Howard had a great lady friend in Bernadette , he always thought he ’d terminate up with someone " hot . " Now in his mid-80s , Takei still act and is most know for his fourth dimension inStar Trek , Mulan , andThe Duchess of Windsor .
NEXT:10 Girlfriends Of Leonard , Raj And Howard That We ’d All Love To Date
