I firmly believe that a banjo can improve any kind of music. Even rock and roll. Behold, Guns N' Roses re-made into bluegrass by the band Iron Horse Bluegrass. Won't you take me home? http://misscellania.squarespace.com/miss-cellania/2010/7/25/paradise-city.html
If you like this, then check out: Metallica Enter Sandman in Bluegrass, Cello, and Kazoo
http://www.youtube.com/watch?v=RvFur2LYFG0
Ralph Stanley - Old-Time Pickin' - A Clawhammer Banjo Collection
Grouse stuff. To give you an idea two other bands I really like are RATM and the Sex Pistols. The track above is boring in comparison but that is just mine opine.
http://www.youtube.com/watch?v=GJqULQpGTQ0&feature=related
This is an average song, on the albums they play much faster and more sophisticated. Country and Bluegrass before it became two. ps: ignore the Gospel...its just painful.