There are so many that it's hard to pick one, so I'll pick : Gunsmoke !
PETTICOAT JUNCTION
I bet no one else will put that.
Andy Griffith what else ?
All in the Family!
Taxi.
I just saw my very favorite episode that I had only ever seen once. It's called, "Elaines secret admirer". Made me cry the only time I've seen it, made me cry right now. It's about true friendship and the sacrifices one makes for those we love. Sometimes that love and friendship can come from the most unlikely of places....Jim loved his van..
Beverly Hills 90210.
As a Brit I can't help but answer "Peep Show". I have watched all the seasons 3 times. Unfortunately I have no idea how to embed a youtube video.
Rawhide
Wanted: Dead or Alive
The Avengers (w/Emma Peel)
I enjoy watching "All in the Family."