Ken Jennings

You watch an old 'Jeopardy!' and the categories alone are very plain. 'Poetry,' or 'Movies,' or 'Physics.' If you watch it now, though, there'll be a theme board where the categories are all Hitchcock movies. Lots more jokes, lots more high-concept categories and questions.

There's no real road map to L.A. Everyone's journey is different. You have to persevere and be willing to put everything in it. You have to stick it out. I don't really have a safety net, but what I do is put myself in the best possible position to succeed by working hard. Also, be careful who you let into your life.