Entourage is quite the hot destination for celebrity guest stars/cameos these days.

We've already got Jamie-Lynn Sigler, Bow Wow and Leighton Meester signed on for appearances on the upcoming season and we can now add another name to the list: Jeffrey Tambor!

Most of you probably know Tambor from his performance as George Bluth Sr. on Arrested Development (and if you don't...shame on you...go watch it right now); basically - Tambor is nothing short of hilarious.

Like Jamie-Lynn Sigler, Tambor will be playing himself on the program. It will be nice to see him on television again (though he did appear on the blink-and-you-missed-it Welcome to the Captain this past Spring)...

Source: E!Online