This actually happened last month, but it is still nifty (and newsworthy!)... My son Taeklonn was involved in a massive 40K battle, and here are some pics (not taken by me):
Link at the-waaagh
More photobucket pics
Wow, what a battle!
One of the more satisfying notes is that, if you look really closely at the pre-game shots, you will see some Gorka Morka orks that I painted years ago. They are in my son's collection, and still see regular gaming.