After studying improv at Chicago's Second City and ImprovOlympic in the early 1990s, she co-founded the improvisational-comedy troupe Upright Citizens Brigade. The group moved to New York City in 1996 where their act became a half-hour sketch comedy series on Comedy Central in 1998. Along with other members of the comedy group, Poehler is a founder of the Upright Citizens Brigade Theatre. In 2001 she joined the cast of the NBC television series Saturday Night Live. She became co-anchor of SNL's Weekend Update in 2004 until she left the series in 2008 to star as Leslie Knope in the NBC sitcom Parks and Recreation. She has also performed voice acting roles including the lead role in Inside Out, as well as parts in Shrek the Third, and Horton Hears a Who!. Poehler is an executive producer on the televisions series Welcome to Sweden, Broad City, Difficult People, and Russian Doll.