(YouTube link)
More than 2,500 still photos were taken to make this video. At first, you'll wonder why they used stop-motion animation, but it soon becomes necessary. Then there are a few "how did they do that?" moments. If you like it, continue for the improved photographic stunts in the sequel. -via Metafilter
Blackboard War II
Now just the Big Boss Fight with 50 schoolgirls as Xerox'd Smiths...........
http://www.youtube.com/watch?v=hw4wzwYeZ0Y