Magic Lantern has been enhancing the features of Canon EOS digital SLRs for some time now, most recently giving the EOS 5D Mark III a big increase in dynamic range. One feature found in the second alpha version of their EOS 7D software adds the ability to capture Raw video, albeit at a relatively low resolution of 1736 x 1156.

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A 7D owner named Florian has put this feature to the test, by combining a series of ~2 second DNG files taken in silent shooting mode into a 33-second video. While there's some moiré at times, the video quality is lightyears ahead of the standard H.264 movies recorded by a stock 7D.  

See for yourself:

Canon 7D - Raw Video with Magic Lantern (by Florian)