The world definitely needs geeky t-shirts. There used to be a company called "Outer Products" that had a huge selection (including things for bio geeks, chemistry geeks, math geeks, and physics geeks--you could have your choice of Maxwell's equations in integral or differential form in several different styles) but when I last ran across a catalog of theirs and tried to track them down to order some, they'd vanished. I guess they were no longer defined.
I like the last one of yours best, even though physics geekdom is closest to my heart.