Linkin Park or Avenged Sevenfold would be the closest, I think. They still pale in comparison to the impact of early Metallica, but they're the closest.
Foo Fighters.....I dunno. You can't swing a cat without hitting Dave Grohl. They rock, but it feels like he's just the poster child for rock more than actual earth shaking impact.
Rock just isn't the main thing going these days. Rock On The Range is a pretty good sized festival. The main stage headliners for each of the three days are GnR, Avenged Sevenfold, and Kid Rock.
Compare that to the '91 Monsters Of Rock Tour....AC/DC, Metallica, Motley Crue, Pantera, Queensryche, and The Black Crowes.