What's your favorite remake of a song

Shirelles - "Will You Love Me Tomorrow" by Carole King
Aretha Franklin - "Natural Woman" by Carole King
Natalie Merchant - "Because the Night" by Patti Smith and Bruce Springsteen
I'm sure there are many others but these 3 came to mind first.

These made extreme hits out of previously obscure songs

Black Eyed Peas - Where is the love
Soft Cell - Tainted Love
All Along the watchtower - Jimi Hendrix
Der Kommissar - After the Fire
Hound Dog - Elvis Presley
Please don't let me be misunderstood - The Animals
Red Red Wine - UB40
Shake rattle and roll - Bill Haley's Comets

Sonny and Cher's "I've got you, babe...", sung amazingly well by Patricia Barber.

I just saw Gretchen Wilson and Alice in Chains do Heart's Barracuda but Nancy Wilson was playing too. I actually think that Gretchen Wilson sang it better.

Yes, lots o' good stuff already mentioned.

One not listed yet is "You Really Got Me" by the Kinks.
Nicely updated by Van Halen.
But the version I really enjoy is by Oingo Boingo!