Forget "High School Musical" – Zac Efron has found a new "Entourage."
Zac will appear in an episode of the hit HBO series this coming season, a rep for the cable network confirmed to Access Hollywood.
The star filmed his cameo scenes on Tuesday at the Niketown store in Beverly Hills, according to E! Online, which first broke the news.
"He was filming a scene and talking on his cell phone," a Niketown employee told E!. "None of the other 'Entourage' cast was here. He was really nice."
Other notable names who will make special guest cameos this season include Tom Brady, Lil Wayne and LeBron James.
In a previous interview with AccessHollywood.com, "Entourage" star Kevin Dillon said it wasn't always easy to get other celebrities to appear on the show.
"It's amazing. We couldn't get a decent cameo our first season," Kevin explained. "We got Val Kilmer who finally came on and people said, 'OK, if Val Kilmer did it…' And now it's easy. Now, we get great cameos. Everyone wants to be a part of it and we all do our part in recruiting."
And while a host of big name celebs have lined up for cameos on the series, Kevin said his dream guest star would be one of two Hollywood legends.
"Robert De Niro would be great to have on," he added. "Or Jack Nicholson. We'd love to have Jack on the show."
The sixth season of "Entourage" is scheduled to debut July 12 on HBO.
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