He's some techno artist beloved by a very large amount of people - the more zealous of which are often ravers. Some people say he's innovative and original and praise him as a visionary.
Yeah, every now and again during the day the TV in my apartment will turn on for no discernible reason, and it always turns to channel 7 (despite the fact that it's only ever used on channel 3). So I just turn it off again.