Yeah, me and my brother-in-law were talking about this over his baseball cards. Look at the rookie cards for Mac, Bonds G-Man and you will see a huge difference in the size of these guys. Its natural that some people get larger as they get older, but you kind of knew something was up when the big hitters start looking like Mr. Olympia contestants.
The sad part? The roids really haven't helped old Giambi in the stats department. He was much better in his Oakland days.