Sarah: Baby, I Nerd Your Lovin'

If you're giving a gift to a girl who is nerdy hot, she might laugh with glee and wear this necklace (via swissmiss). Or she'd be charmed that you decided to stay traditional and treat her to some Mii chocolate. Top it off with this awesome card and she will be unable to resist your charms.

Speaking of cool gifts for nerds, I once saw a sleek, silver usb jump drive on a silver chain. It was pretty and functional. I haven't seen anything like it since. Does this actually exist?

Oh, and a hollow book (via Mighty Goods) is perfect for that cute girl that you met in the library.

Edited to add: other stuff I like
Chocolate scrabble: Delicious and educational! Perfect for the person who always kills you on Scrabulous. Or for the person that you always beat. It's like a consolation prize.
This book would be a good gift for a girl that likes to play with paper and scissors.