Medals-grabbin' super-swimmer Michael Phelps is about to become associated with another kind of gold—Ari Gold.

Us Weekly reports that the hero of this summer's Olympics—who's already slated to host Saturday Night Live's season premiere—filmed a cameo for HBO series Entourage on Thursday.

While plot details weren't released, hopefully the appearance involves Phelps slapping some sense into the merry quartet of Hollywood scene-makers. Especially Johnny Drama. God, that guy need guidance.

Watch yourself around that Vincent Chase guy, Mike. He's a real player, and if you're not careful he's likely to steal away the high-profile harem that you've been accumulating since becoming America's favorite pool boy.

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