One season (and a handful of TV movies, but still in my top five FOX series ever):

This is actually kind of hard to choose. I don't really like a whole ton of Fox shows honestly.

1. The Simpsons: I don't know what to say about the show that hasn't been said. It's a classic and a definite staple of what I think of when I think Fox.
2. Married...With Children: It doesn't hold up the best for me but a staple of the network and fun to watch from time to time.
3. Batman: The Animated Series: one of the best series of all time for me personally. I still think it may be one of the best interpretations of Batman ever.
4. Arrested Development: This is a hilarious show with a great cast. Can't wait to see the new episodes.
5. X-Files: I didn't watch it a ton, but most of what I saw was decent. I'd like to go through and watch it all someday.
6. Futurama: A good, funny, and intelligently written animated show.
7. King of the Hill: I didn't watch it all the years it was on but everytime I watch it makes me laugh.
8. Family Guy: The show has it's moments although for me the series is really a mixed bag. The show can be great or fucking terrible.

Can't quite come up with two more to make the full ten at this time..

I never even thought of Batman: TAS. That's a great choice, Mike86.

I am shocked, I tell you, SHOCKED that not a single person has listed Glee.