Crazy Buffet is great! It's a little on the pricey side - about $25-30 a person - but they really do offer a crazy - pun intended - amount of food. There's a sushi bar, hibachi bar, filet mignon station (Don't ask me why this is in an Asian restaurant). Plus, there are several buffet lines of other Asian dishes, salads and desserts.
I've never been a big fan of all-you-can-eat places, but I really enjoyed my visit there. I ate so much I thought I was going to pop.
It's north of downtown Orlando, in Altamonte Springs. You'd take the S.R. 436 exit and head west for a few miles. From Universal and I-Drive, it would take about 30 minutes to get there. A little further if you're coming from Disney.