Ok, I'll start the ball rolling! In this category, please put the name of the artist who's version you like the most. Oh, and please number your entry in the list!
1) Sweet Dreams ~ Marilyn Manson
A very catchy riff, and this style outshines the original merely because the lyrics suggest this style (makes you wonder why this isn't the original version sometimes).
2) Just the Two of us ~ Grover Washington Jr & Bill Withers
Sets up the groovy mood beautifully, and you can't help but love the vocals and solos. Oh yeah, and the percussion and bass are especially groovy too.