Saturday Night Live

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Amy Poehler Last appearance: Late Show with David Letterman on November 5, 2009

Andy Samberg Last appearance: Late Show with David Letterman on October 13, 2009

Bill Hader Last appearance: Late Show with David Letterman on January 4, 2010

Christopher Guest Last appearance: The Tonight Show with Jay Leno on April 1, 2009

Dana Carvey Last appearance: The Tonight Show with Jay Leno on March 11, 2010

David Spade Last appearance: Late Show with David Letterman on June 24, 2010

Fred Armisen Last appearance: Late Night with Conan O'Brien on November 27, 2009

Harry Shearer Last appearance: The Tonight Show with Jay Leno on April 1, 2009

Jason Sudeikis Last appearance: Late Show with David Letterman on August 24, 2010

Jimmy Fallon Last appearance: Late Night with Conan O'Brien on August 13, 2010

Julia Louis-Dreyfus Last appearance: Late Show with David Letterman on May 11, 2010

Kevin Nealon Last appearance: Last Call with Carson Daly on April 16, 2010

Kristen Wiig Last appearance: Late Show with David Letterman on May 10, 2010

Michael McKean Last appearance: The Tonight Show with Jay Leno on April 1, 2009

Mike Myers Last appearance: Late Show with David Letterman on May 20, 2010

Norm Macdonald Last appearance: Late Show with David Letterman on November 25, 2009

Rob Schneider Last appearance: The Tonight Show with Jay Leno on July 26, 2010

Seth Meyers Last appearance: Late Show with David Letterman on July 12, 2010

Tina Fey Last appearance: Late Show with David Letterman on April 8, 2010

Tracy Morgan Last appearance: Late Show with David Letterman on July 14, 2010

Will Ferrell Last appearance: Late Show with David Letterman on August 5, 2010