A Dream 'Entourage' Guest Star Would Be...

"Extra" caught up with the "Entourage" boys at the premiere of the series 7th season, and asked who they'd love to see come on the show.

"I would go with Nicholson," said Kevin Dillon, who plays Johnny "Drama" Chase. "I would love to see Jack on the show."

Watch all the red carpet shenanigans, including the cast impressions of Jeremy Piven, as his alter ego -- the acerbic, foul-mouthed uber agent Ari Gold.

See photos from the premiere!

The show premieres June 27 on HBO.