What would you tell the emerging math class?

I'll be talking to a large gathering of middle-school math and science students about career opportunities? What would you tell them? Your suggestions welcome!

Dan Farber pointed to BusinessWeek's story about the growing demand for mathematicians. Congressman Adam Smith has asked me to address several hundred middle school math and science students at an Intel-hosted career fair next Friday.

What would you tell kids who are interested in math, physics, biology and other sciences if you had 15 minutes to get 200 to 300 kids excited about their future? I'd really like to hear your ideas, too!