Personally, I like kill videos. While they generally aren't informative in the pure educational sense, they do give you an idea of what's going on in the fight. Some will use annotations or other objects to point out key parts of the encounter, but usually it's just music and a caster PoV.
Back when I was tanking all the time, I was always looking for a tank PoV. I wanted to see where the boss was positioned, how the pull was executed, etc. Granted once the fight starts you're pretty much staring at the boss's crotch for the entire kill, so hopefully either the camera is paned way out, or you're REALLY intersted in seeing what buttons are pushed.
For me, I enjoy watching all our kill videos from multiple angles, because well, I don't Fraps them myself. It's interesting to see what's going on in the fight, especially when you compare it with the logs.
Either way - we have a couple of budding Spielberg's in our guild, so if you're looking for all of our kill videos, this is where to start.
http://www.youtube.com/user/99sitr - Shot from our MT's PoV (Paladin)
http://www.youtube.com/user/goomba2k1 - Shot from a Resto/Ele shaman PoV
Remember to watch in HD.