There are a bunch of them that are pretty good. Beatlemania was one of the first I ever heard of, but there are several others that are a twist on the original in some way; Lez Zeppelin is an all female tribute to...well that one's pretty easy. Also there is Little Kiss a all-little-person version of Gene & Paul and the gang. Dark Star Orchestra is a very talented tribute to The Grateful Dead. Anyone else aware of others? I know there are dozens.