(well, that i've done.. ive seen cooler stuff on HBO
bloodgulch, 1v1, all vehicles.
took a ghost to the top of blue's fort and knocked it over on its back. Then i chucked a sticky grenade to the bottom, in the back-right side.
Flipped it back over; got in, and accelerated. right as i reached the edge; the 'nade exploded; sending me+ghost 20-30 feet high, with two forward flips.
landed *square* on blue's head. (he was standing near the tree.)
other than that, i took all the vehicles (except for scorpions) to the top of blue's fort. ghosts are easy; all you gotta do is back a scorpion into the side of a fort. then just ride a ghost straight into the scorpion. for soem reason; the engine ignores the scorpion's barrel, so the scorpion makes a perfect ramp. warthogs are much harder, but still not too bad. back one into the side of the fort; and then move it forward one or two feet. (this is vitally important, too little, and it will hit the wall and bounce back. too much; and its a little harder to get the 'hog where you want it to go.) throw a sticky grenade so it lands just under the bumper, and when it explodes, fire a rocket at around the same area (a little forward, to get better height.) alternatively, you could fire the grenade a little forward; and the rocket closer to the bumper; the effect is the same. you just want one pushing up; one pushing forward&up.
I havent figured out how to do scorpions with only 2 controllers/players yet, i know people have done it with 4+, but the best i can do is get it around 2/3 the height of the fort, with an end-over-end flip. grenades only have the force to bring scorpions up by inches; rockets only by about a foot.
my best solution so far involves ramming the scorpion onto a rock near the fort, which not only props it up a few feet, but allows the firing of the rockets *directly* into it; and not into the ground. unfortunately; its not quite enough. next time; im gonna try the sticky-then-switch trick (sticky grenades have a longer fuse than frag grenades; so if you are good enough, you can fire a sticky grenade, switch to frag; fire, and they will both explode at the same time.) hopefully, that will be enough. -Recoil