Here are a few of my ideas.
1. Someone uses SMART to get up to a ledge and hang there while a sentry right above him shoots ineffectively at the tips of his fingers.
2. Someone throws a grenade at a light with low health thats scaling a building. The light vaults the edge of the building right as the grenade goes off and this extra momentum launches the light's ragdoll into the skybox. Giant tumbling light corpse FTW!
3. Someone gets blown up in front of the mechanic robot and they fall into a little pot hole. When the robot runs over the corpse it gets attached to a tread and gets flung everywhere. With the body's polygons getting stretched and eventually the whole level is filled with crazy spinning polygon man.
