I recently just heard Jon Lord's Sarabande from '76 with Andy on guitar. I had never heard this before, so I found it quite interesting. The entire album is on Youtube and Rhapsody.
I also just recently heard Hot Flash - his failed supergroup with Jack Bruce from a decade ago. I remember asking Andy about this at one of the Baked Potato gigs and he seemed a bit upset that I even knew about it. Perhaps because this project never got off the ground. Jack Bruce's site lists 4 songs they recorded, but I was only able to locate one. I like it.
http://www.youtube.com/watch?v=ZOLlSbav2EI