Behold as I use my powers of Paint!
This is TF2's cp_gravelpit map. I'm playing RED (defense) on top of C, when a scout arrives and double jumps onto the middle platform, threatening a friendly demo on the main ramp.
This cannot do, of course, and what follows is awesome:
Yeah. I jumped off the top platform and backstabbed the scout
IN MIDAIR, ON MY WAY DOWN (this doesn't sound very impressive until you see how fast the little fuckers can move). I was grinning like an idiot for an entire hour after that.
If we're talking scripted/intended, though, DMC4's Angelo Credo fight is totally awesome and the best boss I've yet seen in a videogame. It's such an intense fight I have been known to play the entire level preceding this guy just to have him hand my ass to me half a dozen times and still gleefully come back for more.
It figures it'd be the only boss in the entire game they
don't recycle at one point or another.