Oprah tries improv for the first time with the cast of 'Thank God You're Here.'

2 of 7
When Oprah agrees to try her hand at improv, the pros give her a lesson! Jason Alexander, who played George Costanza on Seinfeld, Angela Kinsey of NBC's The Office, Thank God You're Here regulars Nyima Funk and Maribeth Monroe, and David Alan Grier break down the rules for her.

The first rule is to think, "Yes, and..." not "No, but..." "Don't deny the situation," Jason says. "Go with it." Secondly, David says to never ask questions, but provide answers. "More than any other rule, always listen," David says. "Just listen to what the person is saying to you. Say the first thing in your mind."

"But what if I'm not funny?" Oprah asks. Angela says not to worry about that. "I would say just be truthful, and you don't have to worry about getting a big laugh," she says.

With these rules in mind, Oprah performs her first improv skit! "People ask me all the time, 'Do you get nervous doing [The Oprah Winfrey Show]?' I never get nervous, but now I'm a little nervous!" she says. In the end, though, Oprah finds her footing. "I started to feel a little better."