Greg Grunberg takes on Kirstie Alley.

Greg Grunberg from "Heroes" has become a spokesperson for Weight Watchers. Greg has dropped a ton of weight & looks great! I have to give kudos to Weight Watchers. Having a spokesperson as likable and famous a s Greg is genius. Jenny Craig relies on Kirstie Alley, who I feel is as popular and likable as poison ivy...Read Greg's interview at the Weight Watchers website.