Comic-Con. It's not just for nerdy guys anymore. And it's not all just about the influx of squealing "Twilight" girls, either. This summer's event, taking place July 23-26 in the San Diego Convention Center, could shape up to be a smorgasbord for female fandemonium. (We say "could" because the official rundown of panels and events won't be officially released until next month.) But we've got a pretty good idea of what eager girls can expect (aside from one heck of a line for the "New Moon" session). Other vampires will be in their midst ("True Blood" and CW's upcoming "Vampire Diaries") but also kick-ass TV heroines ("Dollhouse" and "Chuck"), the muscle behind "G.I. Joe" (Channing Tatum, anyone?), perhaps a return visit from Robert Downey Jr. (hawking "Iron Man 2") and, if we're lucky, Brad Pitt himself (for "Inglourious Basterds"). But wait, there may be more! Read on... FOR THE RECORD: An earlier version of this caption reversed the first and last names of an actor featured in the film "G.I. Joe: The Rise of Cobra." The actor's correct name is Channing Tatum.)Summit Entertainment / Los Angeles Times / Weinstein Co.