I wasn't initially a big fan of Led Zeppelin, they seemed a little overblown to me back when they were first on the scene. But that was just my own prejudices in music and eventually I grew to appreciate and even dig their unique musical gifts and contributions to the unfolding history of seminal rock'n'roll bands.
But if you'd asked me to put aside twenty two minutes of my time to watch a tribute to them from the Kennedy Center and introduced by Jack Black, a sometimes overblown production himself, I'd have passed. Especially since most live music performances on TV are miked (that how you spell that? miced doesn't seem right) terribly and shot even worse.
But an old friend on Facebook whose taste I appreciate, George Mattingly, posted this video and the intro by Richard Friedman said you needed to ignore the clunkers in Black's introduction and stick it out to the end and you'd be rewarded.
I did and I was, to the point of actual tears of gratitude that these guys exist and created the music they did. And that it was captured pretty damn well for TV. As Friedman said in his intro to the video, turn the volume way up. And enjoy (but you gotta watch to the end).