Guys and gals, Valentine's Day will be here before you know it so if you don't have your plans for gift giving for the geek in your life hammered out, you had better get to it. ThinkGeek has all sorts of stuff that geeks will like and you should give some of the stuff a gander.
Among the cool V-Day gear is a plush heart pillow that has a rhythmic vibration. If that's not geeky enough for you can give the LED Flashing Sweetheart Kit. You have to build this thing yourself, it comes with a heart shaped board and LEDs that have to be soldered on along with other parts. Nothing says love like a soldering gun.
You can also get a box of Mini Plush Microbes, stuffed animals FTW! My personal favorite is the 8-Bit Flower Bouquet. I think this is what Mario would have given the Princess for Valentine's Day.