I was hoping someone would mention Andy Van Slyke! He was my favorite player growing up, and when he came to the Orioles, I had to pinch myself to make sure I wasn't dreaming. Didn't quite go the way I wanted to, but I still remember him ripping a double down the right field line.
Last year, I finally convinced my wife to order me a custom Andy Van Slyke Orioles jersey. Hoping to trot it out at some point this season!