Here's a few more dramas not mentioned so far - not all long running but I'd love to see on DVD -
Two Faces West (60/61) 39 Episodes
Tightrope (60) 37 episodes - Mike Connors
The Californians (57/59) 54 episodes
Man Without a Gun (57/9) 52 episodes - Rex Reason
My Friend Flicka (56/7) 39...