Gregory Everett Proops (born October 3, 1959)[1] is an American actor, stand-up comedian and television host.

Both Proops and McShane impressed producers Dan Patterson and Mark Leveson, who put them on their show, Whose Line Is It Anyway?.

[8] In November 2011, Proops did a week on Royal Caribbean's Freedom of the Seas with the Lewis Black Comedy Cruise Tour.

His other credits include hosting Space Cadets, a mid-1990s science-fiction comedy game show on Channel 4 in the UK, which also featured Craig Charles (Dave Lister from Red Dwarf) and Bill Bailey, and appearances on BBC2's Mock the Week.

[14] In addition to his stand-up and improv acts, Proops has done voice work in various films and TV shows, including Tim Burton's The Nightmare Before Christmas, and the miniseries Stripperella with Pamela Anderson.

Proops has been involved with Turner Classic Movies since 2013, appearing on several of the network's podcasts and in person at public events.

Since 2010, Proops has hosted a podcast called The Smartest Man In The World,[16] often together with his wife Jennifer Canaga, in which he talks about current events, celebrity culture, and his personal life, usually in front of a live audience.

Proops also played the title role in BBC Radio 4's sci-fi comedy series Seymour the Fractal Cat.

Proops provided the voices for the Harlequin Demon, the Devil, and the Sax Player in Tim Burton's The Nightmare Before Christmas soundtrack and movie.

Proops also provided the voice of Fargus, a pyromantic court jester for the PlayStation Pandemonium game series.

The book is based in part on Proops's weekly podcast The Smartest Man in the World, detailing the author's movie and poetry recommendations, baseball facts, powerful women, and misconstrued history.