Surprised the Bellagio buffet hasn't been mentioned.
Guaranteed food comatose every time you leave that place.
They have just about anything you want: italian food, seafood (crab legs galore), any kind of meat you can imagine (kobe, wellington, prime rib, etc)....and this is not typical buffet food, it's food you'd happily buy in a restaurant. I think it's $35/person on the weekends for dinner, but it's definitely worth trying at least once...