Playing GTA IV, I was at the top of the parking garage on the third island with a bike and my friend on the back of my bike. I had someone else fly a heli, and he popped up right on front of the ramp, I drove into it and jumped off the bike, since the heli was low on health the bike ran into the propellers and took them out, killing my friend on the bike. The heli fell and killed the pilot. I lived.