I found this link at the end of Sam&Max - Abe Lincoln Must Die:
(http://www.maxforpresident.org/images/max_portrait.png) (http://www.maxforpresident.org/)
There are some additional animations and funny sequences.
I'm curios to know what will happen when all funds for Commemorative Super Hero Stamps will be gathered.. you can freely click "donate" as it's not real.