The name Jordan Belfi might not mean much to you, but if you watch Entourage, you absolutely know Adam Davies. And, if Belfi's done his job right, you probably really hate the guy.

As the best-dressed nemesis on TV, Davies is the super-agent foil to most of Ari Gold's (Jeremy Piven) plans and schemes. And in a particularly conniving episode (airing Sun., Sept. 21 at 10PM), the Davies/Gold smack down reaches new heights. Or lows, depending on how you see it.

Belfi talked to us about his character's underhanded ways, his most devoted fans and why watching Gordon Ramsay vomit means must-see-TV in his house.