To some extent they're also very tricky. They're also tough from a production standpoint because you've got locations involved, so they're an extra amount of work just on the getting it on film part of the equation.

I remember Justin [Monjo] sticking a flag in Kansas very quickly. I think that was one that he just warmed to immediately, and said "I want to do that one", and so it was, "Okay, you've got it, it's yours." So, yeah to some extent, but we do enough episodes on Earth that there were enough to go around.