25. Seth Morris
A former UCBLA artistic director, Seth Morris began studying with UCB in 1997. He's also appeared in comedy festivals all over the country and enjoyed a long-run with off-Broadway show Marijuanalogues.
Though you likely recognize Morris as a regular on Go On, you've probably seen him on television before. His credits span many prominent comedy shows of the last decade, including Curb Your Enthusiasm, Chappelle's Show, and Reno 911.