Twiddle a few knobs and in about five minutes you're making thick, lovely bleepy sounds. Great for a) creating indie-game background music b) procrastinating. (Thanks to Mefi for finding this!)

http://feeds.boingboing.net/~r/boingboing/iBag/~3/rWECcJnC3l0/a-303-style-synth-in-your-brow.html