There was too many to just say one...Gilligans Island, Beverly Hillbillies, Rat Patrol, Combat, I Dream of Genie, Palladin, Gunsmoke, Lost in Space, Maverick, The Rebel, etc, etc, etc. I even liked to watch Mutual of Omahas Wild Kingdom.
The funny thing is that we only had three channels then, now I have 200 and can't stand to watch anything if it isn't a '60s rerun.