Why did I never really notice this before? Here's the deal... TOS is on the Sci Fi satellite tv channel here in the UK -"digitally re-mastered." As someone who remembers when this originally aired in the UK, I tuned in, partly out of simple nostalgia and partly to see if re-mastering had made any difference... One thing ONLY really stood out as different- and it is TERRIBLE! During every fight scene it is now PAINFULLY obvious where the stunt doubles have been substituted.. Random guys in bad wigs, different heights, different physiques, different complexions... I just can't understand how I never really noticed this any of the OTHER hundred times I've seen these shows re-run over the past decades. The episode introducing Khan for the first time was particularly excruciating. The stand-ins were so jarringly bad I didn't know whether to laugh or cry Sorry, I just needed to share with someone... Live long and prosper!