There are too many to list. I agree with the Yanni, though I like Tribute better. And MacAlpine has to be on there as well. Maximum Security was just awesome when it was released, and it stood well the test of time. And YJM's Rising Force, though there are two vox tracks, would have to be my all-time #1 since it so changed the face of electric guitar back in the '80's. And Bitches Brew is up there as well for its profound impact on everything music. And Vinnie Moore's Mind's Eye caused a huge stink when it came out as well. I guess that makes me at five, huh?
So, in summary, I'll try to actually rank them:
1. YJM, Rising Force
2. Miles Davis, Bitches Brew
3. Tony MacAlpine, Maximum Security
4. Vinnie Moore, Mind's Eye
5. Yanni, Tribute