I saw one today too that I don't recall ever seeing, called The Howling Man. I was so excited! haha
The Howling Man is one of my absolute favorites. I've seen most of them as well, but always catch new ones when marathons come on. I think my other favorites would be The Hitchhiker, To Serve Man, Will the Real Martian Please Stand Up?, The Monsters Are Due on Maple Street, The Obsolete Man, Five Strangers in Search of an Exit, and The Invaders.