How do you get on stage at one of the most famous comedy clubs in New York? Can you walk right in and step up to the microphone?

That's basically how it works in the new movie, "Is This Thing On?" But if you don't happen to be Will Arnett, how do you get on stage at the Comedy Cellar in Greenwich Village?

Reporter Jamie McClellan wanted to find out. Speaking with Weekend Edition host David Furst, he breaks down how it works in real life.