It's the resolution between the two. The resolution on the blu-ray is significantly better. While watching the Torchwood blu-ray dvd's you can see John Barrowman's pours.... Sometimes this can be a good thing other times it can be a bad thing.
Cnet has a quick about blu-ray vs dvd (http://reviews.cnet.com/4520-13817_7-6462511-2.html)
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Date: 2010-07-31 07:25 pm (UTC)Cnet has a quick about blu-ray vs dvd (http://reviews.cnet.com/4520-13817_7-6462511-2.html)