All things 1-bit here. But mostly music.
A tiny forum for things 1-bit music: http://randomflux.info/1bit/.
Pikachus' cry in pokemon explained: the video that got me re-inspired to look at 1-bit music.
1-bit symphony by Tristan Perich is classic: http://www.1bitsymphony.com/
A paper on 1-bit music: The 1-Bit Instrument, by Blake Troise