Laughing at out of context comic panels from a bygone age is ace. It's something I've done on occasion, particularly here and here. But the absolute king of such activity is a man called Adam Barnett and his blog 'Comics Make No Sense' is great fun. Check it out here.
He has also been good enough to post some wacky comic panels submitted by me. Go and visit him and spread the love. And in true 'Comics Make No Sense' fashion, here's some more Motivational Posters.