There's the Space Invaders theme at right and also shades featuring the Gmap location pin, shades featuring the F1 and F2 brightness keys on the Apple keyboard, and one featuring the RSS reader icon. Shades can be constructed either as tabletop fixtures or hanging lamps. At $70 each, they're a bit pricey, but I haven't seen anything similar, so if you love them, I say it's worth a splurge.
Sometimes simple design is better than intricate, and that's why I'm loving these geeky lampshades! Simple and handmade, these shades are crafted from wire and fabric and feature a few geeky designs.