SilverFromOz has a maximal logo on one of his shoulders.
I know another guy who has heaps of cool tats, Autobot and decepticon logos, He man, Skeletor, Thundercats logo, the Hulk, just to name a few.

Personally, I think they look cool but the thought of going under the needle isn't very appealing, and what happens if I get flabby or really ripped, later on and my cool logo starts to look like a badlly drawn bowl of spagetti.