tvrss.net is an RSS for eztv.it For the Daily Show in particular I usually just watch on Hulu. The eztv link is http://eztv.it/shows/1/daily-show-the/, and the March 2nd episode looks like it was posted about an hour after the east-coast showing.

Private trackers all fight to get the torrents up as soon as the shows pre. I'd recommend http://ninjavideo.net - They fight for pre, but are public, and offer direct downloads as well as letting you watch via the DivX web player. Firefox/chrome/google are now labeling it as malicious, but I haven't seen any evidence of that.