After giving up digital cable for a ridiculous price, we found a channel showing a whole hour a night of M*A*S*H. Woohoo! It's a tie between Northern Exposure, but I can probably say it's my favorite TV show.
Also, on the same channel, we've been watching The Andy Griffith Show, Gunsmoke and The Rifleman. I've never seen any of these, but my mom used to watch them with her dad and I get a good laugh