Exapod ported TV-B-Gone, the universal TV off button, to the tiny PIC12F1840. He used the free version of the Hi-Tech compiler so the optimizations leave a lot to be desired, but the code only uses 17% of program memory. The prototype was made on a protoboard and an SOIC packaged PIC.
TV-B-Gone ported to PIC 12F1840 - [Link]
Dmitry Grinberg had a few PIC12F1840 MCUs lying around, and wanted to use them in some type of IR remote control project. He decided to construct a remote control mood light using the PICs in both transmitter and receiver. Four high-brightness LEDs (White, Red, Green, and Blue) are used to combine to form different colors in the receiver unit housed in a jar, along with a 38 kHz IR receiver module. The commands are generated by a PIC (housed in a gutted remote control housing) and transmitted via IR LED.
Remote control mood light - [Link]