People either love or hate cover bands. Some think they are fantastic tributes, while others think they are blatant rip-offs.
Personally, I love tribute bands. They give music fans a chance to hear songs live and celebrate a favorite band--and often it's a band that's disbanded, one you'll never be able to see live anyway. Some of the biggest cover bands are doing it up huge today, like the Pink Floyd Experience and Led Zeppelin II; The Pink Floyd Experience have played Pink Floyd's music for decades, and Led Zeppelin II recreates their live performance to perfection after studying tapes of the Led Zeppelin's performances, appearances, antics and body language.
I'm lucky that when it comes to my favorite band, Pantera, I have two different tribute bands that know how to rock wonders. One is Far Beyond Driven, based in my hometown of Kansas City, and the other is Cowboys N Hell, based right here in Phoenix.