High Flying ukemi (falls over objects - chairs, partners etc) have always troubled me.
I was reading Girevik online the other day and they were extolling the virtues of gymnastic training for adults.
See - http://www.girevikmagazine.com/eight/gymnastics.htm
I got to thinking - the gymnastic "jumping front roll" seems much more natural for these sorts of things.
FYI It looks like this (170kb) - just imagine you've leapt over something and are coming into land.