The Second City and Upright Citizens Brigade served as training grounds for some familiar names. Here's a glance at some famous alums:

Second City:

Joan Rivers

Peter Boyle

Bill Murray

Julia Louis-Dreyfus

Mike Myers

Chris Farley

Tina Fey

Cecily Strong

Upright Citizens Brigade:

Amy Poehler

Kate McKinnon

Bobby Moynihan

Aubrey Plaza

Ellie Kemper

Aziz Ansari

Ed Helms

Natasha Leggero