If you know of a cool or interesting callaboration, post it, if you don't know of anything, well now WAKE up! ... maybe you'll learn something here! I didn't know until recently that Stevie Ray Vaughan played the guitar parts on David Bowie's 1983 Let's Dance! Wow, I knew the song had some tasty guitar parts but didn't know it was Stevie playing them. Of course everyone knows this one: EVH played on Michael Jackson's Beat It! I thought that was pretty cool too. Next?