Well, I think the million pixel idea is played out by now, but I'm wondering if there are still a few niches that might be able to milk something out of the genre? Porn? Music? I dunno. I've got a script and some webspace. I'm up to experimenting. I have a few ideas but I'm not sure if they're unique enough to make the concept flourish.
Pron might work, 1 million erm body parts etc etc. I don't think music would work, it is meant to be heard, not seen and you can't really hear 1 million songs at the same time.