I love MASH, I don't think I've ever seen a bad one. New shows that are pretty funny: Big Bang Theory How I met your Mother Can forget Cheers, Home Improvement
I once sat through a 10 hour stooges marathon ... couldn't walk away (not even from the ones with Shemp).
Everybody Loves Raymond-- my vote best contemporary show. M.A.S.H. All In The Family-- My two old time favorites.
I Dream of Jeannie. Night Court. Cheers. Hogan's Heroes. Get Smart. Mary Tyler Moore Show. Any Red Skelton character, Dead Eye, Klem, Cauliflower, etc. Home Improvement. MASH. And I could go on and on. You might notice a pattern in my choices.