The opening sequence for Captain Kangaroo in the late 1970s with various clips where various celebrities bid the Captain good morning. In the sequence, there is such a feeling of honest affection and respect for Bob Keeshan as a television institution. See at Youtube.
Bob Keeshan frequently visited hospitals in character as Captain Kangaroo, requesting no payment and asking for no press coverage. On at least one occasion, when told just as he was boarding a plane that a terminally ill child he'd visited previously was still alive and wanted to see him, he canceled his flight and made the trip.