Here is another fun geeky t-shirt which would be a great addition to your geeky wardrobe, the Space Invaders Light Up T-Shirt.

This fun geeky t-shirt features a Space Invader on the front that lights up, and it comes in a variety of colours, and different Space Invaders designs.

The Space Invaders Light Up T-Shirt is available for $37.70 from Firebox.