Betabrand’s Think Tank project solicited clothing designs from tech notables, putting them up for the community to vote on in a charity drive; I’m very fond of the STL Jacket by Makerbot’s Bre Pettis, “inspired by the tessellated patterns of 3D mapped images and the name is an ode to the .STL file format.”
Also notable are the Magnum Pi Hawaiian Shirt by Yahoo’s Jeff Bonforte (the graphics being made up of tiny Pi glyphs) and The Accelerator Shirt from Techstars’ Brad Feld (designs inspired by CERN particle collisions).
(Thanks, Chris!)