http://www.ivi.tv http://www.ivi.tv does a pretty good job of this, at consistently high quality. Caveats: (1) It's only for broadcast channels at this point;

http://www.ivi.tv http://www.ivi.tv does a pretty good job of this, at consistently high quality. Caveats: (1) It's only for broadcast channels at this point; (2) it's unclear that what they do is legal, but they believe that it is and appear to be litigating this point.