As Jim said above,if this were put out on Video or DVD,I'd buy it too! I watched this show for about 3 or 4 years I think,starting in early 1977 and I may be wrong but I think it ended in '81 or '82. I was 8 when it started and if I'm right,I was 12 or more when it ended.
This gave me my earliest insights into a time before me,that I didn't even know existed. It was intriguing to learn all about the stars of "Hollywood's Golden Age" and then to discover (at that time) that a great deal of them were still living! When my family lived in California from 1977 to 1980,I wished we could have gone to Hollywood more often and found and met these folks.
"That's Hollywood" opened my eyes at a very impressionable age and the fact that it was narrated by Tom "Mr C." Bosley from Happy Days,kept me tuned in! If it turns up on video,all of you out there reading this,get it! Buy or rent 1985's "That's Dancing" film as well,it's a great movie like this was a great show (and still is!)