ThinkGeek has possibly the geekiest shirt every devised, the animated Transformers shirt. You have two choices the AutoBot in red or Decepticon in purple. The Logo lights up in a pattern sure to announce your geekdom to the world.

The shirt is powered by a pair of AAA batteries hidden inside a interior pocket of the shirt. Geeks be warned, you must hand wash the shirt. The description says you can adjust the animation style.

The price of the shirts is $34.99 each and they are in stack currently except for the small Decepticon that is backordered. Let me warn you all now, if you sit next to me at the premier wearing one of these shirts flashing in my face, I’ll kick you in the nuts, or at least give you a really nasty look. Via ThinkGeek