Hey! All the Star Trek TOS episodes are on Youtube.

CBS itself put them up there, in full, and in high-definition: you can’t embed them, and there are ads, but from what I can tell these are the originals, not the hacked-up syndication versions, so good deal all around.

Here’s Mirror, Mirror, which I looked up mostly because my wife and I were trying to remember whether Star Trek: TOS costuming allowed you to see belly buttons. Apparently, the answer is yes.