Nice to see this thread bumped to the front again. I got a couple autographs from Lee Majors this past weekend at KC Comicon. He's moving a bit slower these days (and likely will need a second knee replacement in a couple years), but he is looking good at age 83 and his memory is as sharp as a tack.
I've got the first three seasons on DVD, although I may splurge and get the whole set if they don't do seasons 4 and 5 (and the reunion movies) as separate disks. All things considered, the show does stand up pretty well for the most part. Yes there are some cheesy bits, but I was pretty impressed with some of the episodes and the writing (and in ones involving aviation, they seemed to keep their facts relatively straight depending on who the writer was).
Majors gave a nice panel talk during the convention and told a neat story about filming the first Bigfoot episode. Andre the Giant was in the suit for that shoot and Steve said he was a great guy and an excellent stunt professional (able to leap and land right next to Lee's head without touching it at all). But the film crew did try to perform a prank on him. Andre was already pretty well known for consuming mass quantities of alcohol with little affect on him due to his size. So between takes, while not getting out of the suit he would guzzle a six pack of beer in less than a minute or two and crush the cans to "rehydrate" as it were in the heat. One day, the crew tried slipping a diuretic into his beer to see if it would get Andre to pee and find out how he would react. Andre drank it and it apparently didn't affect him at all as he still never took off the costume at all that day.
The funny bit is after rewatching some of these episodes, I can recognize where some of the toy ideas came from. Oscar Goldman's exploding briefcase seemed to come from "Return of the Robot Maker" when a fellow OSI agent wanted Steve to try out some of his Q gadget tech on a mission. The same episode also featured Steve doing a karate chop to take the Oscar Goldman robot's head off... a feature on the Kenner Maskatron robot toy. The Uranium case from Steve's Bionic mission vehicle seemed to evolve from a plot device in "The Seven Million Dollar Man" although the toy case looked cooler. And of course, who can forget the Venus Space Probe. I had that toy when I was a kid and it was a COOL toy. The one in the episode was creepier though.