I just received this link in my email and I need to post it here so I can find it again.
Lego Creche (a tutorial)
My boys will be wanting to do this, right after they finish playing with the game St. Nicholas brought them today: The Priest Game. They've been playing all day. "It's awesome," is my 12 year old's review. Keep in mind he's a geeky homeschooled kid if you are wondering if your 12 year old would like it too.