I went to Monster Jam yesterday/today, whatever you want to count it as, and Nitro Circus pulled off the cleanest landing ever done for a monster truck back flip. Adam Anderson and Taz also did a rough looking front flip which was still awesome. You just won't believe these huge trucks doing this.
Nitro Circus - http://www.youtube.com/watch?v=F4Q1gEKBTvg
Looks pretty cool though I am not really a fan of that kinda thing.
I have seen Nitro Circus and i think they are really awesome and I'm waiting for more of them to come out.