"Avatar" star Sam Worthington went toe-to-toe with a massive bouncer just before getting arrested outside an Atlanta bar, at least according to the bouncer ... who called in to talk about Sam's strange behavior. Plus, Richie Sambora dropped in to talk Hurricane Sandy relief, his new album, his daughter (with Heather Locklear) breaking into acting, and ... guitar lessons for Harvey??? Also, if Gov. Chris Christie's thinking about a presidential run in 2016 ... we've got bad news: America doesn't elect fat candidates! We tried to find one in the last century, but no dice. Not-so-deep down ... are we all fattists?