Check out Nostrap's music on here for some great music. You probably heard of him, Please Intro, BFG23, and In A Trance Redux.
Artwise, on Deviant-Art.com, Mischievous Martian has some of the best custom art evar, and is for hire too.
I've only just joined, so my first music submission is gonna take some time before NewGrounds approves my submission status...
Once that happens, I'll have a few more up in no time, and there should be new stuff every week or so. I scrounge free stuff from ACIDplanet.com and others...
Until then, just chill out dudes.
Peace