Entourage" star Jeremy Piven and actor Stephen Dorff nearly got their "Celebrity Death Match" on, after trading insults in the wee hours at New York HotSpot Bungalow 8.

Page Six is reporting that both actors - who had come from Sean Combs' party at Pink Elephant after the Council of Fashion Designers of America Awards - were, according to many spies, "well lubricated" when they showed up at Bungalow at around 1:30 a.m.

Piven, a well-known swordsman who once made out with four different women in 10 minutes in front of a Page Six reporter, had just gotten done telling our spy how he wanted to "score with chicks," when Dorff - who was in "Blade" and "Cecil B. DeMented" - cut the bathroom line in front of him.

Supposedly It went something like this:

Piven: "Yo, what are you doing? You know you don't need to cut the line!"

Dorff: "I can do what I want!"

Piven: "No, you can't!"

Dorff: "Yes, I can!"

Piven: "You're a has-been!"

Dorff: "At least I am a movie star - you're only on TV! Cable TV!"

The last comment caused Piven to cursing at the top of his lungs, and security was called before the two could come to blows.

According to Page Six: A witness said, "Jeremy, who actually had a table, was shoved into a bathroom by security and left shortly after. And Dorff, who was in the standing-only section, kept hanging around all night telling anyone who would listen, 'I am going to kick Jeremy Piven's ass!' It was hilarious."

Dorff wound up at 5 a.m. at Scores West, telling strippers, "I'm a movie star - you should want to sleep with me," according to one member of his "posse".

Page Six tried to call Piven's rep Siri Garber, but it appears that Siri fired him Monday. "He has morphed into his obnoxious 'Entourage' alter ego, Ari Gold," a source said."