Today must be the day for super-cool novel approaches to ui.
http://www.kanyeuniversecity.com/blog/?em3106=224339_-1__0_~0_-1_2_2009_0_0&em3298=&em3282=&em3281=&em3161=
saw this on engadget.
It uses a projector and force sensors uner a layer of foam to manipulate the "screen"
i dunno if its really practical, but its freakin cool and its squishy!
-dr. karl

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