Nerdville, Tn

It's back to Nerdville Central with us! Tonight: Mack goes Meta, Erin is Enthusiastic (about wise grapes, pizza, and Karl Urban), and the Con-versation Continues! Also: the best Jimmy Buffett songs, Wizard World issues some cancellations, what "bless your heart" means, Paris Gellar's perfection, and how to be an Amerikern!