Tina Fey was in Washington, D.C., last night to receive the prestigious Mark Twain Prize for American Humor from The Kennedy Center.

Many of her funny, famous friends were in attendance to show their support, and you'll be able to watch the proceedings when PBS airs footage from the event on Nov. 14, 2010. In advance, PBS sat down Fey to answer questions culled from fans over Facebook and Twitter.

What they wanted to know: What work of yours will have the most lasting social impact? If you could go back in time, what would you ask Mark Twain? Who makes you laugh? How is writing for SNL different from writing for 30 Rock? How do you build confidence when you perform? What did improv teach you? What have you learned about yourself since your improv days? And finally: Cake or pie? If you don't like the answers, blame yourselves for not coming up with better questions.