Andy Roddick

Do you have to be like a second-grade dropout to be an umpire? Did you go to school until you were 8 years old? I think you quit school before you were 10. Stay in school kids or you'll end up being an umpire.

Frankly, as much as I love to improvise, it hasn't been difficult to stick to the script on 'Mad Men.' The writing is so precise, and the story so carefully crafted, that I don't think there's room - or need - for ad libbing. I could never come up with dialogue as lovely as these writers do, anyway.