The ninety-eighth TV show: #120 Ultraman
Tokusatsu - basically shows around superheroes often fighting men in rubber suits - is a long running genre that's probably most known for sentai, which spawned Power Rangers. Ultraman could be argued to be the first - although its predecessor series has the monsters and Godzilla has been around for ages, this show is the first with a superhero character that fights them, while they're giant, including a transformation sequence.
A lot of the show relies on models work, not too different from Thunderbirds but with a human walking through them. It's fairly impressive to see and quite convincing for the most part. Unfortunately, in most episodes the most exciting parts - the big monster fights - are restricted to the last few minutes, probably because of cost. It means that the plot needs to carry a lot of weight, and that doesn't always work out well. Of the science team that's the focus of the series, only some characters are interesting (Ide probably most of all) and the side characters are a mixed bag. Parts of the show explore some interesting ideas, but they're too often mixed in with generic plots that they get quite boring.
The drive to include this show here is that it represents a major Japanese genret hat hasn't made it out elsewhere, but it feels like the story telling isn't quite there yet to pull it off.