ReadyTraffic.com is the only one with clear development+profit potential. Obviously for a traffic generation website. Unfortunately, there are a lot of those floating around right now, and the vast majority of them probably don't work as far as increasing your website sales. If you can come up with something thatworks at reasonable cost, then go for it!
CrazyShitWeDo.com is also a nice name, but since the name can't fly on TV (bcoz of word 'shit'), the internet is your medium. Produce a site that accepts video uploads of people doing 'crazy shit', and if you can offer a cash prize for the most popular ones then you just might have a monster hit on your hands.
Good luck!