Not gonna lie, I don't expect this choice to make me friends, but it is one of my favs:
Scissor Sisters - Comfortably Numb
(There was at one point a video where the band were swimming, but it seems to have been pulled.) It might be that I actually heard it before the original. And while I'm making myself reviled, what the hell:
Elvis Presley - Yesterday/Hey Jude
(I kind of wish there were a better version, but it is what it is.) What can I say? I have a soft spot for the mashup, especially considering that we know, and he knew then, that this was an Elvis well past his prime. Anyway, perhaps as a palette cleanser, something perhaps a bit less blasphemous:
Christopher Lee - My Way
...yeah, this one I don't feel quite so compelled to justify.