panerai, I just read your post about the ability of these actors to have the time and money to really work out, train, eat, sleep, live the way that would allow these gains to come faster than your average bear...
And all I can think of is why would these guys do this? Can you see Robert Downey Jr. saying no to going out drinking and partying? Or really any of them. Moderation does not seem to be a strong suit with most actors, and why should it? Hell, take the juice, get ripped, etc. I bet they don't even know they juice or do dnp,etc. They just get with these trainers and tell them what they want/need for the next pic. And they probably say, no details, just tell me what to do when.
That way they have plausible deniability. They have no problem looking in the camera...wait, these guys act for a living. They would lie in a heartbeat.
Anyways, my point is, it's not 'fun' working out and shit as opposed to partying, and in Hollywood, you sure as hell don't want to be anti-social. I think gear is everywhere in Hollywood. Why not, every other drug is?