The cover by Disturbed is surprisingly good, but it can't eclipse the Simon & Garfunkel classic.
SIMON & GARFUNKEL OBSESSIVE'S NOTE: the version on Sounds of Silence (the one linked in the OP) isn't actually the original exactly; it's the second incarnation. The first was on the first album, Wednesday Morning 3 A.M., and was notably much more stripped-down. The version on Sounds of Silence, among other differences, has a much more notable role for the guitar. EDIT: LegendaryGamer0 linked it above, I see.
About two years ago, I saw Paul Simon in Hyde Park. He was accompanied by Ladysmith Black Mambazo among other (brilliant) supporting artists for most of the set. At one point, they all headed off-stage, and the lights went off... then Simon returned, on his own, and delivered The Sound of Silence in the dark, no lights at all. It was absolutely beautiful. Stripped away all the production value for the simplicity and haunting, beautiful value of it.