There's Something For Everyone
I myself prefer books I'd actually read, nice kitchenware, cool-but-useful technology, nice clothes, or pretty jewelry, but for the not-normal person in your life:
How to Find a Gift for a Self-Proclaimed Nerd or Geek.
And in case you were wondering:
How to tell the difference between a nerd and a geek
How to be the type of nerd that girls love.
Seriously, there's a wikihow for everything.