Himbos in Toyland
The action figues on the left are Luke Skywalker and Hans Solo, circa 1978. The ones on the right are Luke and Hans circa. 1998.

I guess Barry Bonds wasn't the only one who got juiced in that interim.
Full paper on the evolving ideal of men's bodies as seen through action figures, here (warning: PDF). Another article on muscle dysmorphia in males here.
(Via Fashion Incubator)