Led Zeppelin is boring, there I said it. And I can't fucking stand Robert Plant's voice, jesus I wish Bob Digi would do as I says, "and stick a long silver hook down your throat and snatch out your vocals" to that dude... sounds like a cat having sex with a really annoying chick.
and Bob Dylan, you have written some of the best songs I have ever heard, but you can neither sing them nor perform them even a small fraction as good as ANYONE else I have ever heard play a dylan tune. I literally believe that EVERYONE who performs dylan tunes does them better than dylan, myself included..
my favorite is Hendrix "Like a Rolling Stone" and the Dead "Its All Over Now Baby Blue (Jerry Bear version not Bob Weir-d)
This website should help, it is all the dylan covers ever released.. proves my point like fucking algebra