Last Exit to Nowhere are an online retailer who do fantastic tshirts of logos from fictional companies. This t-shirt is for Skynet, the corporation from the Terminator movies who create the artificially intelligent military network that becomes sentient and starts a war on humans.
In fact, there’s loads of cognitive science themed t-shirts, including companies from Bladerunner, Total Recall, Eternal Sunshine of the Spotless Mind, Robocop, 2001 and so on.
The Skynet t-shirt is my favourite although you should clearly deactivate any cognitive scientist wearing it without a trace of irony.
By the way, the UK military communications network is called Skynet. Only funny if you don’t think about it too hard.
Mind Hacks 
I am proud owner of “Nexus 6 (off-world/combat model) by Tyrell Corporation” T-shirt
Another good site for referential T-shirts is Found Item Clothing (www.founditemclothing.com). They specialize in T-shirts that are seen in movies and TV shows. So you can get, for example, the “I (heart) Nuclear Waste” shirt from Real Genius, or Murdock’s “Napoleon” shirt from “The A Team”.