I've been told by enough people that I kind of look like Tobey Maguire, so I may go as Peter Parker. A girl I know says it would be a good idea. Kinda comb my hair like him, wear his kind of glasses, and wear a white buttonup shirt partially unbuttoned revealing the spiderman suit underneith. I wouldn't really want to go all-out as Spiderman. ALthough I was considering wearing an intentionally kiddy-looking spiderman outfit complete with a cheesy Walgreens spiderman face-mask.
Although I've always wanted to go as a pimp, Kramer-Technicolor-Dreamcoat style.