My go to “comfort tv” show is always Three’s Company. Lately I have been watching How I Met Your Mother. I’m on season 7 now. My son likes watching old Disney shows like Phineas and Ferb. He also likes movies and tv credits, theme songs.

My so n loves the credits after a film & he dances & rewatch & repeatedly

I used to watch reruns of the Mary Tyler Moore Show from 1970s. Mary Richards (MTM) moves from the Minnesota suburbs to Minneapolis. The show has a talented ensemble cast. In episode one Mary goes for an interview in the newsroom of a small television station.
Here is the link to her interview with Mr. Grant (Ed Asner). You might recognise his voice from Pixar’s movie “Up”. He also played Santa Claus in the movie “Elf”.
https://youtu.be/zj286uBKCu0?si=CCMgmM056AVzyDLx

I liked Butch Cassady and the Sundance kid.

That 70s Show and Modern Family, The Office, Friends…lol also my comfort tv classics. Like The Brady Bunch, you’re familiar with the episodes, the ending, so it’s like background music.