See 100 Pop Culture Costumes on One Poster

Halloween Express (via Sploid) has produced this cool little poster featuring the costumes of 100 pop culture figures from movies, television, and video games. I almost wish it didn't have the "answers" below each character, because while some are obvious (Captain America, Han Solo, etc.), there are a few that I definitely wouldn't have gotten without the assist at the bottom. If you don't cheat, can you guess the identity of all of these costume wearers?