FPS Baseball 96 was one of the best baseball games ever made, imho.. I played that game every day with my roommates at the time. It was a sim style game, but being able to play and tell the players what type of pitch/swing then seeing it all unfold in a graphical representation really drew me into it's world. It's a rare feeling I have with very few sports games.
It was so far ahead of any other sports game for its time. That and FPS Football 97 will forever hold a piece of my gaming heart.
OOTP is getting to that level with the addition of 3D and I'm so happy Markus fully understands where we are coming from.