Here's Zac Brown joining the Foo Fighters to cover War Pigs, one of the greatest songs ever written. Very few things get me going as much as the original version, ZB and FF CRUSHED it though. Everything ZB does is absolute gold.
Here's another favorite cover of mine that Zac Brown Band has done, absolutely INCREDIBLE. Show me a band that can cover all of the best rap songs from the 90's-2000's. I can't stop listening to this video. I would have lost my mind if I was there.