I saw a local student wearing this the other day
which of course on the back states the cat is NOT dead... made me recall the excellent book written by Brian Greene. Nothing like special / general relativity, quantum mechanics, and calabi-yau manifolds to get the mental juices flowing.
I often wonder how much not only our math, but our language, inherently limits our ability to understand such things more easily. Perhaps that's why some of us like Linux better than Windows... I'd rather be given a construct to build my own "reality" (give me a command line and pipes any day!) than be limited by flawed assumptions that time (much less the Bill Gates notion of computing) is experienced in the same manner by everyone.
Quick - someone stick an Ubuntu server near the event horizon of a black hole!! Who wants to bet that Vista wouldn't escape Earth's orbit without blue-screening?!?!?