Balanced nosegrinds...
particularly backside nosegrinds...
particularly ones where the person pops out in the middle...
or backside 180's out....
or even better, backside 180's out in the middle
nollie backside flips and frontside half cab flips
backside lipslides
Backside tailslides
Any trick where you slide on the nose or tail and do a proper pop out (think Welsh's noseslides or Danny Garcia's back tails)
In the simple but beautiful category, a big, well flicked, well caught kickflip