E!'s Watch With Kristen is reporting that Zac Efron will be joining the Entourage gang for season six. Well, maybe not exactly joining the gang, but at least making a cameo on the HBO show.

Ok, so the question is, will he be playing himself? One of Ari Gold's newest It-Guys? An excitable young actor who tussles with Johnny Drama? My guess is that Efron will be playing himself, because he's becoming the Next Big Thing in Hollywood -- if he isn't already there.

And it just makes sense, because so many other stars have appeared as themselves on the show; notably, James Woods, though I've always wondered if he's as hot-headed as they make him out to be on the show. If so, he has quite the sense of humor about himself.

Another clue for Efron playing himself is that his scenes were filmed at the Beverly Hills Niketown store on Tuesday morning. A Niketown employee said, "He was filming a scene and talking on his cell phone. None of the other Entourage cast was here. He was really nice."

An onlooker also noted that Efron was wearing sunglasses and left in a limo with another guy. I don't know; these just sound like the types of things Efron might be doing on a day out and about in L.A. I can just picture him buying stuff at Niketown, wearing shades, talking on a cell phone, being nice ...

Other stars appearing as themselves in season six include musician Lil Wayne, athletes Tom Brady and LeBron James, and writer/director Aaron Sorkin. Gary Cole, Autumn Reeser and Kate Mara are also scheduled to appear, playing a new group of agents/assistants who work with Vincent and the gang. Season six is scheduled to premiere on HBO July 12, 10:30 PM.

So are you looking forward to the new season? Seems like the excitement for Entourage has cooled over the past couple of seasons, but I'm still watching.