Johnny Galecki

It's always interesting for me to watch the pilot of an established show because you see how the writers and actors weren't really sure what the show was and what the dynamics were. If you look at the pilot for 'Seinfeld,' for example, it's practically unrecognizable.

Growing up in Chicago, I was a theater nerd. That might be very cool on the East Coast, but in Chicago, it's really the athletes that come in No. 1 on the cool scale. Maybe musicians after that. Community theater? That's way down the list, my friend.

As they say, there are two rules in improv: Never say no, and never ask why. When another actor asks 'Why?' or says no to something you're suggesting, then it's very clear that they're putting the onus on you, because they're not comfortable with it themselves.

Set your sights high, the higher the better. Expect the most wonderful things to happen, not in the future but right now. Realize that nothing is too good. Allow absolutely nothing to hamper you or hold you up in any way.