The best pool game I ever played had Jeanette Lee as the expert. For the life of me I can't remember what it was called, but it was Windows and Mac. I also bought it about five years ago. It didn't have the best story-line in the world, but the physics were very good.
I tried to find my copy about two years back but couldn't. I think it accidentally ended up in a box of stuff that we donated.
Good luck in your search, and if you find a good one PM me.
Well pretty much the only good one for mac is Macpool, but it kinda sux, but its worth a try. I also play Litepool (on the XP side, its not made for mac), which is pretty good.