I thought the food at 50's was mediocre at best. I do not eat fried chicken unles it is boneless (so I didn't even consider that, plus it came with "greens" - blergh!), and the pot roast and pot pie were just average - I make much better at home myself. I also don't like the "gentle ribbing" aka harrassment from the CMs. Not my cup of tea, although I can understand how someone who enjoys a HungryMan dinner and that kind of humor can have a ball there.
While I didn't think the food at Sci-Fi was spectacular (the burger was competent, the onion rings and shake were pretty darn good), the atmosphere was great and I loved snuggling with my hubby in the backseat of the "car."