Wow, some great suggestions, and I have to say lots of the above covers are some of my favorite covers.

However, they aren't all, IMO, "better" than the originals. As good an interpretation of the originals, from the above list:

All Along the Watchtower - the Jimi version is the first song I heard when I turned on the radio after my daughter was born. So I am damn partial to that version. But does it supplant Dylan's and the Band's version of it on the live recording 'Before the Flood'?

Not in my world. But the two versions are, IMO, equal.

Same with Jose Feliciano's version of 'Light my Fire'. Better than the Doors? No, not IMO. Equal to the Doors, not quite but almost.

Annie Lennox's version of 'Whiter Shade of Pale', same deal. Equal to the original.

Or the song "Crazy Love". Who's version of that one is best? Or "Brown Eyed Girl"?

I will agree though, Eva Cassady's version of "Fields of Gold" wipes out all others. Just blows 'em away.