Regardless, if you don't want to be Mr. O, wouldn't it be more hassel than it's worth to look like that??
Also, surely genetics play a role, but I believe it's possible to get a hell of a physique (sp?) somewhere inbetween a skinny twerp and Ronnie C regardless of genetics, with the right training, diet, gear etc etc.
I may have ventured a little off topic, but wtf...