Those of you who are children of the 80s like me may remember the anti-D&D crusades some Religious Right types pursued. People were claming that RPGs were somehow connected with the occult, violence, suicide, you name it. In response to this, some RPG manufacturers put disclaimers in their products. Bill Walton of The Escapist has taken the time to compile some of the more interesting of these and is currently posting them on his blog. Most of them are something on the lines of "This is just a game, we do not in any way condone the occult, etc,", but a few are more noteworthy. For instance, Over the Edge First Edition required its GM to repeat its disclaimer before and after every gaming session (which must've gotten tedious after awhile). My personal favorite would have to be from Mage: the Sorceror's Crusade - it's quick and to the point:
"Yes, it's a game.
No, it's not Satanic.
Don't kill anyone.
Get a life.
You can see the complete collection at The Escapist Blog.