Rob Lammle posted some great videos in an article called The Ultimate Superfans: Tribute Bands That Really Rock (you should read and watch if you haven't already). Many other tribute bands were mentioned in the comments. Commenter jewessjeans mentioned Hayseed Dixie, which isn't exactly a tribute band, but a mashup of sorts. They play hard rock songs bluegrass style. Yeah, they started out doing AC/DC tunes almost exclusively, but after some success, you gotta branch out. Hayseed Dixie is an experience no one should miss out on.

You Shook Me All Night Long

Walk This Way

Rock and Roll All Nite

Bohemian Rhapsody

Centerfold

Dirty Deeds

Fat Bottomed Girls

Hells Bells

She was Skinny When I Met Her

Hayseed Dixie is NOT just a cover band. This one's an original!