Paul O'Neil both as a Red (my hometown team) and later as a Yankee.
Dave Collins (I love speedsters)
Chris Sabo (wasn't that good but played his heart out)
Charleton, Myers and Dibble - The Nasty Boys
Ryne Sandberg (ok, he's great but as a Cubs fan I have to throw that one out there)
Greg Maddux (his pitching is sheer artistry)
Randy Johnson early in his career when he was feared due to the fact that NO one (including him) knew where the ball was going
Ozzie Guillen (he hit a home run in the Astrodome in a Pursue the Pennant game for me once...a 1-1,000,000 shot that I always reference in any discussions about birth control
That's about it off the top of my head but if I thought about it some more I could come up with quite a few more I'm sure.