If you've heard JS's "Crush of Love" you know what an incredible tune it is, very open-ended to what can be laid over it for lead. I found a backing track for it, not that professional, but a good basic jam, and really nice for an instructional track. It's really nice to practice to. You can take this from "basic" to "ball to the wall" with some practice. I'm still pretty much "basic".
Glenn
http://www.box.net/public/s8o39iopui