Entourage's season six cast just keeps growing bigger and bigger.

In the last couple weeks, George Segal and Kate Mara have joined the cast in new roles.

Now, the Entourage has gotten even bigger as Matt Letscher, most recently known for his role on Brothers & Sisters, has signed on for at least one episode. He'll play the television executive in charge of Drama's TV show, according to Ausiello Files.

We know we can't what to see what dumb things Drama does to piss him off.

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