13. Darrell Hammond (1995-2009)
Darrell Hammond was SNL's longest serving cast member, gracing the stage for 14 years. Though there are an endless list of impressions to choose from, with Hammond being known best for his tackling of political figures, we can't get enough of him bickering back and forth with Alex Trebek (Will Ferrell) on Celebrity Jeopardy. Now if only we could witness a real-life showdown between the randomly matched haters.