Trevor Boyd and Steve Ilett remade the slow-moving bullet-dodging scene from The Matrix. Their official website goes into detail about how they executed the project:
By "frame accurate" we mean that we took all of the video frames from that part of the movie (that's nearly 900 frames for just 44 seconds of footage) and reproduced them all in Lego.
This was time-consuming to say the least, taking us something like 440 hours to make the completed movie. At that ratio of 10 hours per second we figured we could do the whole film in about 9 years, so long we didn't need to eat or sleep. As a full-time job then, we're probably looking at 25 years or so. No thanks.
Early in the piece we decided we wanted to do everything "in camera". No wire-removal, no special effects, no crazy Photoshop tricks. We pretty much regret this now, but I guess it gives us bragging rights of some sort. We did do some colour correction and image stabilising, and at one point we edited a very small number of frames in one scene so that some minor background shake was taken out, but that's it.
Official Website via io9