As everyone has stated before Drizzt clones (and I have seen them, and when I gm for them, they routinely meet a grizzly fate {no i am not a perfectly neutral GM, and occasionally I do something petty}), but erikun hit the nail on the head with the Mary-Sue comment. I generally dislike anyone playing very evil races as good. They can be played well, but usually aren't. They could be neutral, and would be more realistic characters, but no they choose to be insufferably good, and devoid of real character issues to make them likable.

Also drow really suck, even with a whole book dedicated to them (DotU) they still fail to be worth 2LA(and a con penalty). You are better off playing an elf with a severe skin pigmentation problem than a drow (and most other elves suck too, so there you go).