Oh, what a tangled Tholian Web we weave.
This one freaked me out as youngun. The Tholians and their voices were creepy and the disembodied Kirk was pretty freaky too.
On the very channel that I am now watching (Superchannel), they are running the show, Enterprise. Just 3 days ago I saw the unofficial sequel/ prequel to this show. The Defiant from this episode drifts through a space warp and into the Parallel "Evil" Universe. It was one of my favourite shows of this season. I feel lucky compared to my North American comrades for I can still see fresh Trek, while they have to wait until 2008 for a purported new movie. I hope director JJ Abrams doesn't get Lost in his vision for this flick.