Eh, around here, I'm probably considered a geek, and I'm proud of it, however, I'm not a nerd.
Geek = Stereotype of people that like: Video Games [people that aren't casual players, and mostly MMORPGS], Anime, Trading Card Games [Magic the Gathering is usually regarded], attend Sci-Fi/comic book/any type of convention, play Dungeons and Dragons, that sort of thing (doesn't have to be all of them, but at least one. Um... eh, those are the most common hobbies I can think of. Geeks are not necessarily smart or dorky, they really are normal people that tend to have hobbies that others seems to frown upon for no apparent reason. Hackers are probably included in this (though, in my opinion, I think of them as nerds, since they're using their 1337 h4x0r skillz to show some sort of power, usually)
Nerd = Stereotype of the smart kids in school who are not necessarily buck-toothed or have pocket-protectors, but usually are the ones that answer every question in class (or try to until the teacher gets tired of them answering), flaunt their intelligence to everyone, and suck up to teachers (and only hang out with people like them). They're the ones that over-achieve everything to make themselves look better in the eyes of older people.
Alternately, I suppose the pocket-protector thing works here too, but I've never actually seen someone like that in my entire school life, so it's really not used that way around here.
So, to answer the poll, I'd rather be called a geek, because, well, considering what we consider them, I
am one. We pretty much established a set definition for both during my Jr. Highschool years. Of course, these aren't the same definitions as most outside of my general area.