Entourage

The "Entourage" star tells us he got banged up bad doing theater work back in the day -- so bad it left big scars on the back of his head.

Piven -- who was photographed in Hawaii -- tells us on December 17, he went under the knife for a "scar minimizing procedure." We never heard of it either, but supposedly it reduces the scarring. But Piven says he had no idea post-op scarring would be so prominent.

So what's Jeremy gonna do? He says he was thinking of shaving his head but can't because of continuity problems with "Entourage."

Lee, who plays Lloyd on the HBO show, stopped by the all-male review Saturday night at the Rio in Vegas -- and from the looks of it, it was smooth sailing for all involved.

One of 'ems been known to have a lot of fun with E.

Rex told a photog last month he's sometimes the butt of a joke among the crew and that he tries not to let it bother him. We caught up with Kevin last night and while he said he doesn't think Rex is lying, he thought Rex "didn't mean that" and he had a "hard time believing it."

For his part, "Entourage" creator Doug Ellin said at the time he would talk to Rex and fire anyone who did it again.

Ashley Madison (the actress) is suing Ashley Madison (a website for people who want to have affairs) claiming the site is using her name and likeness without her permission -- and destroying her reputation in the process.

There isn't a single picture of Ashley Madison on AshleyMadison.com, but there are a few on AshleyMadisonBio.com -- a site the actress claims is connected to the infidelity encouragers.

In the suit, the actress claims she wants the site to stop using her name ASAP ... because frankly, she feels cheated.

Rex Lee -- who plays Lloyd on the show -- was out in L.A. yesterday, where he claimed certain members of the crew "occasionally" make fun of his ethnicity and sexuality on set. Rex added, "I try not to let it bother me."

After Lee's admission, the show's creator Doug Ellin told TMZ he's "shocked and horrified" to hear about the situation and "will be speaking to everybody before we start filming again in March. It's not something condoned or acceptable."

Ellin also told us he already spoke to Lee -- and during the convo, Rex re-confirmed that crew members had made "insensitive gay jokes."

Ellin claims he's now going to lay down the gauntlet, telling Rex if it happens again, the culprit will be fired.

We stopped Mark Wahlberg on his way to the Emmys -- in the middle of traffic, no less -- to talk a little smack about the NY Jets beating his beloved New England Patriots.

Adrian Grenier showed off his unworked out body and hairy backside in Miami yesterday.

The 33-year-old actor is a huge A-list star ... on "Entourage."

He wasn't relieved by the Q's -- and by the end of it all, he told our guy to "go to church!"

After a night of partying inside Hyde nightclub, the dude who plays Ari's whipping boy assistant got all financial on us when we asked how much jack the crew pulls in saying, "I live comfortably and I bet everybody else makes more than me ... so I think everyone's getting paid a lot."

Oh ... and he also made out with his boyfriend.