What I'm about to show you isn't nonsense. Some of these performance I've watched 30 or 40 times. Take a couple minutes and watch them. These clips have everything--crying, laughing, presidents dancing, and Jon Stewart.
1. Bruce Springsteen...sigh (and swoon)
Jon Stewart introduces him and it's really funny and really touching and just pretty much perfect.
2. Paul McCartney.
I don't particularly care for No Doubt's performance, and I was a big No Doubt fan. The first CD I every purchased was Tragic Kingdom. Also, my mom insists that President Obama loves No Doubt. I tried to find some proof of this, and I actually did. It's just really bizarre to me. I still recommend skipping ahead to 2:40. I really, really enjoy this whole set.
3. Led Zeppelin
The final Kennedy Center Honors clip comes from last year's ceremony. I actually watched this one as it aired...and then re-watched it a bunch once it was on youtube.
I think as far as single performances go, this is the best of the bunch.
Hope you end up watching these as many times as I do!