Niklass Erickson's underflip in the JOSS video takes the cake for the most controlled single flip trick I've ever seen in my entire life - close runner up is a rodeo 12 (i think?) thrown by an unknown pro (probably wallisch) in the Clown School "Fuck" edit
Also, the wallisch gold run double cork 10 landing was fucked - one of the most effortless landings that seems like he never left the ground, but that's not how I'd define afterbang.  Afterbang to me is a noticeable impact but made to look steezy, and because of that, I'm gonna agree with Martini's shot.
another "what the fuck?" moment for me was definitely Lars' cork 7