I'm seriously surprised to learn that 'ManDog' aired in the US! It was one of those quintessentially British children's dramas very like the output of the Children's Film Foundation. I remember its original and repeat screenings on the BBC in the seventies and have fond memories. Its star was a cute black and white Border Collie (some relative of 'Blue Peter's' Shep?) A family pet is, accidentally, the first to encounter a injured refugee from a totalitarian future whose only means of survival is to store his mind in the nearest living thing. The man-dog then strikes up a telepathic relationship with his boy owner to the latter's delight, as the two seek means to repair the traveller's time-ship which materialised in a junkyard (now where have I heard of a time-ship in a junkyard before, 'Doctor Who' fans?). The time machine looked like a changing room locker, I think - very tall and narrow. Definitely a curio I'd like to see again to find out how good my memory is, if nothing else.