My father only watches a handful of shows now but he will watch them for hours. I used to wonder who marathon broadcasting was designed for and now I know.
The Andy Griffith Show - I was never a fan of this show when I was young but I now enjoy it. It’s pretty well-constructed and Don Knotts was brilliant.
Bonanza (also Gunsmoke and other old westerns) - Again, I wasn’t a fan but when I watch them now, I’m surprised at how well they hold up.
MASH - Here I have the opposite reaction. I used to really like this show when it was originally being broadcast. But it has aged really badly.
Everyone Loves Raymond - God, what a horrible show. I don’t know why, out of all of the sitcoms that have been broadcast in the last thirty years, my father became a fan of this one. The only part of this show that’s even bearable is Peter Boyle and he’s saddled with terrible material.