Brian Thomas Smith - wikipedia Brian Thomas Smith This biography of a living person needs additional citations for verification. Please help by adding reliable sources. Contentious material about living persons that is unsourced or poorly sourced must be removed immediately, especially if potentially libelous or harmful. ( January 2013 ) Brian Thomas Smith ( 1977 - 05 - 13 ) May 13, 1977 ( age 41 ) St. Louis, Missouri, US Occupation Actor Comedian Producer Brian Thomas Smith ( born May 13, 1977 ) is an American actor and comedian known for playing the dim - witted but kind - hearted Zack Johnson on The Big Bang Theory, and his appearances on Fear Factor and The Amazing Race Season 7. He has also made guest appearances on Two and a Half Men and The 100 Greatest TV Quotes & Catchphrases. Contents 1 Early life 2 Career 3 Filmography 4 References 5 External links Early life Brian Thomas Smith has a younger brother, Greg, who participated with him on The Amazing Race. Smith graduated from Central Missouri State University ( he was also a Sigep ) before moving to Los Angeles. He was a member of the sketch comedy troupe, The Exploding Pajamas. Career Smith has appeared in commercials for Miller Lite, Pizza Hut, Burger King, State Farm, Lopez Tonight, Chevrolet, Heineken, Carl 's Jr., Coors Light, Budweiser, Taco Bell, DirecTV, Pop Chips, Buffalo Wild Wings, Honda, Applebee 's, and Audi spots as well as being featured in a new Progressive Insurance commercial. Smith appeared on the reality television competition series The Amazing Race 7. Smith and his younger brother, Greg made it to Leg 7 of the race. The two were involved in a car accident during the sixth leg that injured their cameraman and pushed them to last place, but they caught up to the team in front of them resulting in a footrace. They placed sixth overall. Filmography Film Year Title Role Notes Duel Short 2006 The 12th Man Adam Rump TV movie 2007 What Ever Happened to Gavin Buckmaster ? Gavin Short 2008 No Place Like Home Matt Short 2009 The Moonlighters Bob Short Tourist Attraction Dereck Perry 's Fairies Short The Indies Sean Short All American Zombie Drugs Bobby 2012 Lucy in the Sky with Diamond Brian Short Surprise Matthew Short Hot Neighbours Judd Short Concrete Blondes Karl Short 2013 Casual Guy 2015 Lethal Seduction Randy TV movie Television Year Title Role Notes 2006 Two and a Half Men Emmett 1 episode A Good Knight 's Quest Agent One 8 episodes The Indies Sean 2 episodes : `` Pictures Up ! Part 1 '' ( season 1 : episode 1 ) `` Le film de France '' ( season 1 : episode 4 ) 2010 -- 2011 ; 2013 ; 2016 -- 2017 The Big Bang Theory Zack Johnson Recurring role, 7 episodes : `` The Lunar Excitation '' ( season 3 : episode 23 ) `` The Alien Parasite Hypothesis '' ( season 4 : episode 10 ) `` The Justice League Recombination '' ( season 4 : episode 11 ) `` The Toast Derivation '' ( season 4 : episode 17 ) `` The Thanksgiving Decoupling '' ( season 7 : episode 9 ) `` The Cooper Extraction '' ( season 7 : episode 11 ) `` The Fermentation Bifurcation '' ( season 9 : episode 22 ) `` The Cognition Regeneration '' ( Season 10 : episode 22 ) 2010 -- 11 Casual : The Series Guy Season 1 - 3 ( series regular ; 17 episodes ) 2012 Happy Endings Nick `` Party of Six '' Wolfpack of Reseda Vance Season 1 ( series regular ; 5 episodes ) Suit Up Bjorn Hansen Recurring role, 4 episodes : `` No Money, No QB '' ( season 1 : episode 3 ) `` The Pistol Formation '' ( season 1 : episode 4 ) `` The Beer Knight Rises '' ( season 1 : episode 5 ) `` Death or Glory '' ( season 1 : episode 8 ) References External links Official Website Brian Thomas Smith on IMDb The Amazing Race Original U.S. version Seasons 5 6 7 8 : Family Edition 9 10 11 : All - Stars 12 13 14 15 16 17 18 : Unfinished Business 19 20 21 22 23 24 : All - Stars 25 26 27 28 29 30 Contestants Versions outside the U.S. Asia 5 Asia contestants Australia 3 : Australia v New Zealand Australia contestants A Corrida Milionária Canada 5 6 : Heroes Edition Canada contestants China Rush China Rush contestants China French version HaMerotz LaMillion 5 6 HaMerotz LaMillion contestants Latin American version 4 : Edição Brasil 5 6 : Ecuador Latin American version contestants Norge Norge contestants Philippines Philippines contestants Velyki perehony Vietnam 5 Related Shanghai Rush The Ridonculous Race Retrieved from `` https://en.wikipedia.org/w/index.php?title=Brian_Thomas_Smith&oldid=837160533 '' Categories : 1977 births Living people American male comedians American male film actors American male television actors Participants in American reality television series The Amazing Race contestants Male actors from St. Louis University of Central Missouri alumni Comedians from Missouri Hidden categories : BLP articles lacking sources from January 2013 All BLP articles lacking sources Articles with hCards All articles with unsourced statements Articles with unsourced statements from May 2016 Articles with unsourced statements from April 2012 Talk Contents About Wikipedia تۆرکجه Deutsch فارسی Français Edit links This page was last edited on 19 April 2018, at 02 : 45. 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Question: who plays zach in the big bang theory
Answer: Brian Thomas Smith