According to this Reuters report, T. Rex liked ribs almost as much as Ellen does:

Tyrannosaurus rex scraped the meat from the ribs of its prey in much the same way a human might gnaw on a serving of barbecued ribs, a meeting of geologists was told on Tuesday.

This is not to say T. Rex preferred ribs, those are simply the bones they've found bite marks on. The action of the chomps is pretty interesting though. Probably tasted like chicken.

No, really, Dinosaurs are bird relatives... damned things are even built like giant chickens. With, you know, foot long teeth, sort of thing. BoK!