This is the third time this year that ThinkGeek has given away a free t-shirt (see here and here) but this is the coolest one yet. Again, it is not totally free. First you have to spend $25 on ThinkGeek products but that should be easy as the holidays are coming up and ThinkGeek is an awesome place to get gifts especially if you have geeks in your circles. If you just like the shirt, that is no problem either as you can purchase it by itself for $16.99 – $18.99. They are limited though so hurry if you want to avail of this offer!
Link: ThinkGeek Free T-Shirt