I don't watch many but I like to flip them on if I'm not doing anything.
No question for me. Jeopardy is fast paced and smart and lacks a lot of the silliness and gimmicks prevalent in something like Wheel of Fortune.
In general, I like the trivia shows best. I thought Win Ben Stein's Money on Comedy Central was fantastic, and always watched it after school. Going back, Groucho's You Bet Your Life was brilliant.
I like Wheel of Fortune and Price as right as a kid, but they don't do much for me now.
Family Feud is the lamest game show in my opinion.