Although not directly on topic, I'm always amused when some obscure recording from the 50s, 60s, sometimes even later, turns up and a pathetically grateful BBC (who had trashed the originals) proudly shows a grainy copy of Blue Peter or Doctor Who, taken by a shaky cine camera by a mad hobbyist.
Of course, in line with a lot of the ridiculous legislation over which our MPs have diligently pored over the decades, these pirates should have been prosecuted and vilified, and their reputations and tapes shredded.