Mark Hope said:I don't care for the flighty, fay, "let's run around our treehouses and show everyone how magical and in touch with nature and magical and superior and magical we are" approach to elves. I very much prefer my elves in the vein of Tolkein's Noldor: passionate, vengeful, powerful and utterly self-righteous. My current homebrew doesn't have them, but in my previous one they were a pretty xenophobic lot, dabbling in forbidden mysteries and indulging in all manner of sinister conspiratorial goings-on intended to crush the lesser races beneath their pointy-toed boots. I'm also (surprise) a big fan of the Dark Sun elves - a really original take on the race, imho.
This is the only way I play them. Which can be a lot of fun when in a game with someone that things they should all be like you're first example. Fourtunately my GM agrees with me.

He had a campaign going for a while in which the elven nations had all come together to exterminate all the other races. It was really quite a good campaign. Which isn't to say they were evil, just fed up with the stupidity of humans mostly.