I'll preface this video this way...it is long, but if you are a Van Halen fan you WILL find it interesting. He talks about playing unrehearsed Van Halen covers with Michael Anthony and Corey Taylor (from Slipknot and Stone Sour), his friendship with Eddie Van Halen, and play some of the music he recorded but never released with David Lee Roth (22:22 in).
Enjoy...