I'm kind of amazed that recent failed shows are making it to DVD but none of the "failed" shows from the 60s or 70s. Obviously I'm partial to that era and IMO average shows from then are better than so-called good shows now. But the thing that gets overlooked is that back then in the 3-network universe, there were more viewers watching shows that got cancelled than there are that watch "hits" now. A show in the 60s could pull 25 million viewers a week and still be cancelled for low ratings. I don't even think Top 10 shows now pull that many viewers. So if shows like Firefly and the like which couldn't even make a full season's run are getting released why not cancelled 60s shows which probably had 4 times as many viewers?