|Age (at audition)||30|
|Position Reached||Judge Cuts|
Harrison began performing stand-up comedy while studying psychology and English at Harvard. A summa cum laude graduate, Harrison was the co-founder of the Harvard College Stand-Up Comic Society (or "Harvard College SUCS," as the group's name is cheekily acronymized), the first organization at Harvard dedicated to the performance and appreciation of stand-up comedy and one still popular on campus today.
Now living in Manhattan, Harrison performs in more than 600 shows in New York a year and thus leading both Time Out New York and the NY Daily News to call him "the hardest-working man in comedy." One of Comedy Central's "Comics to Watch," Harrison has also received many awards and honors for his comedy, including the Andy Kaufman Award (2010) for creativity and originality in comedy, the Shorty Award in collaboration with Comedy Central and the New York Comedy Festival for "Best Emerging Comic" (2011), and the Magners Comic Stand-Off (2011).
On television, Harrison was featured on AXS.TV’s Gotham Comedy Live, and National Geographic Channel's Brain Games, and has appeared on MTV, SPIKE TV, the Discovery Channel, and the Science Channel. Behind the scenes, Harrison was a producer for Primetime: Would You Fall for That? on ABC (which premiered in 2013 to over 3.5 million viewers) and a story producer for VH1’s This is HOT 97, as well as the warm-up comic for Katie, Katie Couric's daytime talk show on ABC.
Internationally recognized for his talent, Harrison was the head writer for Tu Nite con Lorenzo Parro, the first-ever late night show on NBCU/Telemundo; was a featured correspondent on the Japanese television show, Scooper, which was broadcast nationally on Nippon TV; appeared in the documentary, 10 Minutes in America, on France's Canal+; and was a featured act in the Magners Glasgow International Comedy Festival in Scotland. Harrison was also the co-host and featured performer of the official Times Square New Year’s Eve World Wide Webcast in 2010 and 2011, broadcasting live to over 250 million viewers around the globe.
Harrison also headlines comedy clubs around the country, including sold-out shows at TBS Just for Laughs Chicago and the legendary Carolines on Broadway (leading Punchline Magazine to name Harrison one of the "Breakout Artists" of the year). Harrison has also been featured in a wide variety of national and international publications, including being highlighted for the "Joke of the Week" in TimeOut NY and being featured in the New York Times, the Wall Street Journal, the Boston Globe, and CNBC.com.
Harrison's one-man show, Harrison Greenbaum: What Just Happened?, debuted at the legendary New York comedy hotspot, the Upright Citizens Brigade Theatre, before commencing an Off-Broadway run and international tour that's included performances at the Kennedy Center in Washington, D.C, and the Magic Castle in Hollywood, CA.
Harrison is a nationally published author (with selections printed in the books, 50 Successful Harvard Essays, 2nd ed., and How They Got Into Harvard) and has been a writer for MAD Magazine since 2005. 
Harrison was also a contestant on season 9 of Last Comic Standing, where he was eliminated in the semifinals.
Harrison Greenbaum's audition in Episode 1206 consisted of joking about deciding to become a comedian after his senior year of college, his parents preferring he be gay than he become a comedian, and people thinking he is gay because of everything about him. Howie Mandel, Mel B, Heidi Klum, and Simon Cowell all voted "Yes", sending Harrison to the Judge Cuts.
Harrison Greenbaum's Judge Cuts performance in Episode 1207 consisted of joking about the emotional journey of someone getting hit by lightning seven times. Howie Mandel, Mel B, and guest judge Chris Hardwick gave him standing ovations. Harrison's performance was not strong enough for the judges to send him to the Quarterfinals, eliminating him from the competition along with Eric Jennifer