Not really an Arduino option that I know of. The official languages are "spin" and assembly. Looking again at parallax's site, it looks like they also support C and C++, so perhaps there is an Arduino IDE plugin for it now. I've used one a few years back for a dual channel sine wave generator. The chip itself is capable of directly driving a VGA display using just a few passives, and there are all sorts of interesting ideas you can do when you have 8 cores to throw around.