http://leedeth.wordpress.com/2007/01/02/aar-conquering-the-town/
This is an After-Action Review of a Coop mission, which took place in the afternoon of December 31, 2006. It could be said that this was a pre-new years celebration, because this was THE most intense mission I have ever played up to this point, in any game. It was three hours long.
We also came across a crazy Santa pic, hidden in a chimney. Easter egg anyone?