A rock and roll band known for playing its Jewish-themed parodies of pop music, Shlock Rock has been around since the mid-1980s and is still active in the religious-parody scene, such as it is.

Shlock Rock caught my attention on the Sunday Simcha with their retelling of the David and Goliath story to the tune of Devil Went Down To Georgia. ("Now the Philistines turned and fled in a very big retreat / And Goliath lay flat on the ground right there at David's feet / David said, 'If you ever come back, you know the way it'll end / I've said it once, Hashem is one and I'll say it once again...")

A quick sampling on Napster shows that the parody is usually musically faithful to the original, although the meter is sometimes stretched. Shlock Rock is a bit conservative in outlook, but definitely eclectic in musical material; their Purim song Achashverosh (to Falco's "Amadeus") has a great beat, and "Prayer Jumping" (to Chumbawamba's "Tubthumping") is just as much fun as the original.

http://www.shlockrock.com/
(what else?)