Gregory Sebastian Fitzsimmons (born April 5, 1966) is an American stand-up comedian, actor, podcaster, and Emmy Award-winning television writer.

[3] That same year he began hosting MTV's Idiot Savants which received a CableACE Award for Best Game Show Special or Series.

[4] Fitzsimmons served as a writer on the first three seasons of The Ellen DeGeneres Show for which he received one nomination and four Daytime Emmy Awards.

He also hosts Sunday Papers with sidekick/producer Mike Gibbons (aka "Gibby") and Childish[7] with comedian Alison Rosen.

From 2003 to 2005, he was a writer and producer on The Ellen DeGeneres Show[8] for which he received one nomination and four Daytime Emmy Awards.