Ok, I have now watched all 5 seasons of this show, from the 70's. LOL, much of it was like watching it anew, due to the length of time between seeing this show. Some episodes excellent, some not so good. In a few cases, too many re-visits, eg. cross-over episodes with "The Bionic Woman", number of bigfoot episodes. I had forgotten that Andre the Giant only portrayed Bigfoot, the first time, afterwards it was Tim ("Lurch") Cassidy. Many guest stars/appearances by stars at that time, eg. Monte Markham, Robert Loggia, John Saxon, Farrah Fawcett, Eric Estrada, Pamela Hensley, Suzanne Sommers ... I did notice Kim Basinger had a bit part in one episode S4.
The packaging on the S4 set is poorly done, 8 DVDs stacked on one spindle. I had a good laugh while watching one episode in S5, Steve comes around a corner, while driving an RV and needs to cross "the collapsing bridge". It triggered memories of my visit to Universal Studios in the summer of '74 and having to cross that same bridge aboard the "glam-tram". I pulled out photos from that trip, I have a pic of the bridge, Frankenstein's monster with it's hands around my throat, ditto with the Phantom of the Opera, other parts of the tour: runaway train, rockslide, burning house, Psycho House, stunt show. I remember when we went through the sound stage area, we saw the sets from "Ironside's" office, bank interior from "Here's Lucy". At the end of the tour in the visitor's pavilion there were appearances by Telly Savalas and Bob Newhart.
A couple of space related episodes had Steve still going up in capsules, a launch of a Saturn 1B got scrubbed, later the launch is done with a Saturn V. When leaving an asteroid mining project the "lift-off" is from one of the lunar missions, as much of the launch footage is NASA footage spliced in. IIRC, Steve mentions that he went to the Moon aboard Apollo 17.
All in all, I enjoyed watching the shows again, I know some episodes I will be re-visiting again.