Animated ThinkGeek T-Shirts

Perform a public service and let everyone know the WiFi signal strength, or just help them visualize the ambient sounds around you. These are just two of the useful things you can do by wearing one of ThinkGeek's animated t-shirts. Alright, I'm not sure how I feel about wearing a tee with a battery pack, as when I'm in a t-shirt mood I typically don't want it to be weighed down. I'll have to reserve judgement till I get one, but which one? Other t-shirts include animated Pong and one shirt that's more than meets the eye. I think I like the WiFi and Equalizer shirts the most though.