Editing Greg Proops (section)

===Improv comedy===
After college, he joined an improv group with [[Mike McShane]]. Both Proops and McShane impressed producers [[Dan Patterson]] and Mark Leveson, who put them on their show, ''[[Whose Line Is It Anyway? (UK TV series)|Whose Line Is It Anyway?]]''. He frequently instigated jokes concerning various [[idiosyncrasy|idiosyncrasies]] and differences between [[British English]] and [[American English]], and would frequently banter with [[Clive Anderson]] on these matters (among others). He lived in London for four years when he was doing the show and lists McShane, [[Richard Vranch]]<ref>{{citation |url=https://podcasts.apple.com/us/podcast/the-smartest-man-in-the-world/id401055309 |title=iTunes - podcasts - The Smartest Man in the World - "Legends" |publisher=[[iTunes]] |date=March 23, 2012 |access-date=December 10, 2012}}</ref> and [[Colin Mochrie]] among his best friends. After the show ended, he was recalled for the [[Whose Line Is It Anyway? (American TV series)|American version]] and has been a frequent "fourth contestant". Through 2020, he has appeared in 74 American ''Whose Line'' episodes, more than any other non-regular cast member.
[[File:GregProops nightclub.jpg|thumb|right|Proops performing in a nightclub in 2008]]

Proops also appeared in every episode of the short-lived ''[[Drew Carey's Green Screen Show]]'', where the performers would play improv games (some of which were taken from the show's main influence ''Whose Line Is It Anyway?'') in front of a massive green screen.<ref>{{cite web|url=http://www.whose-line.com/greenscreen/ |title=Drew Carey's Green Screen Show |publisher=Whose-line.com |access-date=August 16, 2011}}</ref> Later, animators would draw on the background and other props. In April 2011, ''[[Drew Carey's Improv-A-Ganza]]'' premiered on [[Game Show Network|GSN]] featuring Proops along with other frequent guests from ''[[Whose Line Is It Anyway? (UK TV series)|Whose Line is it Anyway?]]'' In July 2012, Proops appeared in ABC's improvisation show, ''[[Trust Us with Your Life]]''.<ref>{{Cite news|url=https://variety.com/2012/tv/reviews/trust-us-with-your-life-1117947868/|title=Trust Us With Your Life|last=Lowry|first=Brian|date=July 9, 2012|work=Variety|access-date=December 20, 2017|language=en-US}}</ref>

In November 2011, Proops did a week on [[Royal Caribbean International|Royal Caribbean]]'s [[MS Freedom of the Seas|''Freedom of the Seas'']] with the Lewis Black Comedy Cruise Tour. He performed the entire week of stand-up with other artists, which included a live, one-hour podcast in front of his entire audience.<ref>{{Cite web|url=https://www.pollstar.com/event/lewis-black-comedy-cruise-at-royal-caribbeans-freedom-of-the-seas-4508517|title=Pollstar {{!}} Royal Caribbean Cruise Line - Freedom Of The Seas|website=www.pollstar.com|access-date=December 20, 2017}}</ref>