I've never heard of Balls of Steel, but Jackass is pretty tame compared to the Pain Olympics. I did see about 5 minutes of it, and it was a bunch of guys grimly going about the business of self-mutilation. It's closer to a snuff film, from what I've heard, though with mutilation instead of death. We were all convinced the footage was real at the time, but who knows? These guys were all Miss Canada in the end.