Ultraman ran from 66 to 67 in Japan and sometimes afterward here in the states.
I wasn't even born yet when it came on, and yes it's cheesy as hell.
When I watched in on WDRB channel 43, I was probably 6 or 7 and in the early 70's we didn't have really great special effects (if you didn't know ) so this show was freakin awesome at my age! These shows, along with Godzilla, Mothra, etc., pioneered the kaiju storylines.
I've got the series, all one-ish seasons of it, of DVD or Blu-ray, but never bought into the newer spinoffs that are still popular in Japan. It's the nostalgia of the original that is the draw for me.
The Ultraman manga is a sequel to the original, so don't expect some earthshattering modern Sci-Fi, just a new twist on an old story!
We hadn't been ruined back in these days with all the CGI you see now. Old Sinbad movies were also among my favorites, and it was these movies that led us to classics like Clash of the Titans and arguably the crowning achievement of the technology in The Empire Strikes Back before stop motion animation was replaced by computers.