It's that time of year again, folks… Comic-Con!The world's biggest geek-culture festival may have started as a comics convention, but today, it's famous for its celebrity appearances, exclusives previews, and its amazing fan costumes and cosplay.Attendees try to out-do each other each year with ever more elaborate, outlandish, funny and strange costumes, and all the rest of us can do is stand back in appreciation, awe, and confusion.Let's see the best that Comic-Con had to offer.