As this year's recipient of the prestigious Mark Twain Prize, writer-producer-actor Tina Fey was feted this week at the Kennedy Center in Washington, D.C., for her contributions to American humor.

It's a body of work that includes years of leading the 'Saturday Night Live' writing team, the creation of '30 Rock' and her Liz Lemon character, blistering Sarah Palin impersonations, and feature films such as 'Baby Mama' and 'Mean Girls.' The tribute will air as a 90-minute PBS special tomorrow (9 p.m. EST).

A slew of famous friends brought the funny, stepping onstage to pay homage to, and poke fun at, their comedy goddess. Steve Martin, Amy Poehler, Steve Carell, Jimmy Fallon, Betty White, Jon Hamm and Jennifer Hudson were joined by 'SNL' boss Lorne Michaels -- who named Fey the first female head writer in series history -- and '30 Rock' co-stars Tracy Morgan and Jane Krakowski.

(After the jump, check out a string of stars speaking out, in all silliness and occasional seriousness, about the Emmy winner's selection as a Mark Twain Prize honoree.)

In this PBS promo clip, Fey answers questions about her improv comedy past ("It's freeing to fail and realize you didn't die"), her favorite comedians, and the pernicious dessert she scorns most...pie.