Gaining size by lifting is one thing but if anyone honestly believes the people in Hollywood get as big as they do as quickly as they do at the ridiculously low body fat percentages that they do without chemical enhancement then they are deluding themselves.  See Hugh Jackman in the last X-man movie.  A 48 year old actor completely jacked as fuck with next to no body fat... yeah that just screams "full natty"  Holy HGH batman LOL Edit:  just to clarify, there is nothing wrong with using whatever the hell you want in your body as long as you aren't using it to cheat while in competition, who cares?