Here's an article on Greg Valentino. Those arms aren't Photoshopped; they're courtesy of an extensive period of heavy steroid use. At one point, he was taking in upwards of 3,500mg of steroid products including testosterone and propitol (sp?). Either way, his steroid use eventually landed him in jail and he's long since ruined his credibility in much of the bodybuilding world. Despite negative feedback from other professionals, Valentino still feels good about his "freak" status.
Surely others, even people on here, would differ with his opinion, but Valentino really disregards the "beautiful" bodybuilder type -- symmetrical, well-balanced, nicely proportioned. He's got a self-admitted Napoleon Complex since he stands only 5'5" tall, so he wanted the biggest possible biceps he could get, even at the sacrifice of his own proportion.
In a related story, he claims that while his libido dropped drastically under the influence, his egg-sized nuts didn't change.