I have a few!

Clapton's cover of "Stone Free"!

Hendrix' cover of "Sunshine of your Love"!

Stevie Ray Vaughn and Jeff Beck doing "Goin' Down"!

Do you have any?

YouTube - Metallica - Turn The Page (http://www.youtube.com/watch?v=dOibtqWo6z4)

This one's pretty good too.

YouTube - Metallica - Whiskey In The Jar (Video) (http://www.youtube.com/watch?v=boanuwUMNNQ)

I also like their cover of BOC's Astronomy.

YouTube - Dwight Yoakam - Fast As You (Video) (http://www.youtube.com/watch?v=A2qo1x9rcCc)

I 2nd the metallica cover of thin lizzy's Whisker in a Jar.

i have an old Hendrix album with some covers - Little Drummer Boy stands out

Springsteen used to cover Dylan's Chimes of Freedom in some live shows. Excellent job.

I heard Leon Russell the other day singing Dylan's A Hard Rain. Very well done.

This guy did covers better than anyone in my opinion !
It can be argued his covers were better than the originals !
YouTube - Joe Cocker - With A Little Help From My Friends (http://www.youtube.com/watch?v=_wG6Cgmgn5U&feature=PlayList&p=2C4528CD6406B331&playnext=1&playnext_from=PL&index=2)

Patti Smith - So You Want To Be a Rock and Roll Star

The Clash - I Fought the Law

Joe Cocker - A little Help From My Friends

Linda Ronstadt - I Can't Help It If I'm Still In Love With You

Asleep At The Wheel - Ain't Nobody Here But Us Chickens

Ray Charles - Your Cheatin' Heart

Come to think of it, just about every cover Ray Charles ever performed. I miss that dude. With the possible exception of "Surfer Bird," there's never been a song written that Ray couldn't make better.