Another interesting project that popped up in the forum recently is Rhys Weatherley's Arduino-based programmer for PIC MCUs. Rhys has a background in PIC development but his old RS-232 based programmer is no longer convenient to use because of lack of serial ports on new computers, so his first major Arduino project was designing and building his own PIC programmer with a USB interface:
Rhys has written up some details in the forum and published all the design details and source code, so if you're interested in PIC development definitely check it out!
