Jack Gallagher (born August 15, 1953) is an American comedian, actor, and writer with a recurring role (as a doctor) on the HBO sitcom Curb Your Enthusiasm. As a television host, he has won Emmy Awards for his work on the PBS series Money Moves, Off-Limits, and Kids, Cash and Common Sense. He was the host of the California Lottery's The Big Spin game show from 1996 to 1998. Not to be confused with the comedian who goes by the single name Gallagher, nor the Dave Chappelle Gallagher parody character, Black Gallagher, Jack Gallagher does not use props in his comedy. He is the author and performer of seven critically acclaimed one-man shows: Letters to Declan (1993), Just the Guy (2002), What He Left (2006), A Different Kind of Cool (2010), Complete and Unfinished (2013) "5 Songs" (2015) and "Concussed: Four Days In The Dark" (2017)Gallagher became a regular at the Improv in Los Angeles and appeared on The Tonight Show with both Johnny Carson and Jay Leno, as well as appearances on Late Night with Conan O'Brien before launching an acting career in the movie Shakes the Clown with Bobcat Goldthwait. His other films include Heartbreak Ridge with Clint Eastwood and the made-for-television Incident at Ruby Ridge.