I've heard it said many times that if you choose to do something you love as a career, you'll never have to work a day in your life. Sappy or not, I imagine there are professions that people are really excited to get up and do every day. Now, I just need to figure out how to make a living designing Rube Goldberg machines.
Inspired by the following video from OK Go:
I'd suggest going to YouTube and watching the HD version, several times. This is one of the coolest videos I have seen in a long time on the internet. Please excuse me while I go pick my jaw up from the floor.