On Sunday's night sixth season finale of Entourage, there's an Ari/Lloyd showdown.

There's also drama between Turtle and Jaime; and resolution to the ongoing E/Sloan drama.

But the episode is stolen by Matt Damon, who appears as himself and gets pissed at Vince's lack of committment to a charity he sponsors. It's great stuff. Watch Damon's cameo below:

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Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.