By Lynette Rice
Updated December 10, 2010 at 12:00 PM EST

Image Credit: Neil Jacobs/CBS; Inset: Jamie McCarthy/Getty Images A comedian is about to hang ten with the cast of Hawaii Five-0. EW has learned exclusively that Dane Cook has been cast to play the brother of Danny “Danno” Williams (Scott Caan). For now, he’s set to appear in one episode that’ll air in February.

Cook was last seen in the flicks My Best Friend’s Girl and Dan in Real Life. His TV appearances has been mostly devoted to his comedy act; he’s done a bunch of specials for HBO and Comedy Central. His early scripted TV work included Good Girls Don’t and Suddenly Susan.

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