So occasionally I hear a sample in a hip-hop or electronic song that I recognize, and I was wondering if there is a website out there that I identifies what samples songs use. Does such a thing exist? If not, it seems like that might make a handy resource for musicheads like me.

In particular, at the moment, I'm currently listening to Jurassic 5 and their song "End Up Like This". I did a Google search and my hunch of sampling Marvin Gaye turned out correct, as the song samples "Just to Keep You Satisfied".
-ringding-

Rap Sample FAQ: www.the-breaks.com

Great resource.