Actually, I love this Tee more than brains.
The use of the shirts own colouring as one of the main image colours, as well as its even layout, makes this a subtle Tee. Subtlety is very important for a versatile Tee; one that can be worn both with your geek mates and out-and-about town without fear of scaring off the norms.
Of course the killer for this Tee is the hidden detail of the In Case Of legend. Once people spot the numbering and the list, your chest becomes a talking point. Just make sure that when they lean in to examine they don't have that glazed stare of the dead!