I always loved T Rex; I am glad that there has been some resurgence of interest in that band.
For really fun covers, check out Richard Cheese. The guy totally cracks me up.
Lounge Against the Machine
Best Covers: Leon Russell's cover of the Rolling Stones'
Jumpin' Jack Flash
Tina Turner's cover of CCR's
Proud Mary
The Futureheads cover of Kate Bush's
Hounds of Love
Hendrix doing Bob Dylan's
All Along the Watchtower
Jack White of the White Stripes covering
Ball and Biscuit (edited to add: I think this is a traditional blues song, if I am wrong, please, someone correct me)
Johnny Cash's cover of Nine Inch Nails'
Hurt
Israel Kamakawiwoʻole's
Somewhere Over the Rainbow/What a Wonderful World
Roxy Music's cover of John Lennon's
Jealous Guy (what a pleasant surprise, I just heard this a year or so ago)
************************************************** *******
Worst Covers:
Manfred Mann's cover of Springsteen's
Blinded By the Light
Guns and Rose's cover of
Knockin' On Heaven's Door (I'd rather hear fingernails scratching on a blackboard)
Whatever it was (sampling etc) that Puff Daddy did to the original Police song,
Every Breath You Take
I hated Stevie Nicks' rendition of
Silent Night
Lenny Kravitz's cover of The Guess Who's
American Woman (his version took all the sting out of that song)