I don't know if the show has any other fans here, but I missed it as I am not watching MTV usually. Luckily though there are several repeats though this weekend.
Nitro Circus is pretty much Travis Pastrana and friends doing part amazing stunts and part Jackass-esque gags (Johnny Knoxville actually produces it.) But even when they are acting goofy, it's still action oriented so the Jackass elements are pretty small. Skydiving, motorcross, stunt driving, bmx, and more is what they did on season one (and Gary Coleman.)