Sci-Fi for the little guy. They are both great, but the whole "50's sit-com sit in Ozzie and Harriet's Kitchen" theme in the prime time might go right over your son's head. LOL though he might get a big kick out of your server telling you to eat all your vegetables.
The Sci-Fi is set up so you sit in cars and watch short clips from really BAD Sci-Fi movies. Make sure when you get to the restaurant, you ask to sit in a car. Its like eating in a drive-in and its a lot of fun.