I've been experimenting with exploding gastanks and found out you can pretty much tell where you will land, i also tried to improve my bike stunting because i wasn't really happy with the third montage.
Also some helicopter jumps from the highest point into pools, i tried landing in several buildings through holes in the roof and made it a couple of times, but didn't survive...

Anyway here it is check it out if you like =)

http://de.youtube.com/watch?v=dFOygeU10oE