Two words: SEA BASS!
If you eat nothing but Sea Bass, like I did, you'll not only satisfy your palate but you certainly got your money's worth!!! I believe they only serve it during dinner though, but it's worth the wait! You know that saying, "It melts in your mouth like butter?" "It" is their Sea Bass.
The offerings at the Bellagio Buffet have always been solid. Upscale but not overly pretentious.
My biggest tip: Skip your ordinary food, such as the Orange Chicken and go for the higher end food. This is the Bellagio Buffet, you can get your Orange Chicken fix at Panda Express anytime!