If you like buffet style meal that is actually good and fun you should definitely check out Samba in the Mirage hotel. It's a Brazilian grill style.
If you love meat, this is the place. I believe it's about $30 per person and you can unlimited steaks (in different cuts and prepared differently), ribs, sausages, fried bananas, rice, beans, lots of different dipping sauce, and my favorite, sweet plantains!
They will give you a toy that looks like a salt and pepper shaker with knobs on each end. One knob will be a red color and the other is a green color. If your table shows green, they will continue bringing you food if you switch it to red, then they will stop bringing you food. you get to sit there and enjoy and tell them when to bring you food. You don't have to line up for the buffet line you just sit and wait for them to serve you at your command! They also have great mixed drinks too!
Try to make reservations though the place gets pretty crowded for dinner.