13. Kristen Wiig
Years on Show: 2005-2012
Most Memorable Sketches: "Gilly," "Target Lady," "The Lawrence Welk Show," "The Californians"
Post-Show Career: She's worked steadily in major movies like Bridesmaids, The Secret Life of Walter Mitty and The Skeleton Twins. She's also going to be in the Ghostbusters reboot in 2016.