When Stephen Colbert interviewed George Lucas on stage before a packed Tribeca Film Festival audience Friday afternoon--just as the new "Star Wars" trailer is going viral--it was an event that promised, at worst, an intellectual exchange between two fascinating minds, and at best a showdown of galactic proportions (“I’m gonna tear you a new one, George,” Colbert promised at the outset). But Colbert, looking extremely relaxed and sporting the white beard he’s been showing since leaving the “Report” back in December, proceeded to let Lucas tell the same stories he’s been telling for 40 years.