Saw the show this morning on the Encore network. I remember being 14 when it came out and loved it then. Today was the first episode (Titanic) and I enjoyed it all over again. Yes, much has changed in technology as far as broadcasting is concerned but the mystery and intrigue of time travel will always be there. The concept of the big time tunnel whereby Doug and Tony are visible on a large screen probably was a forerunner to big screen TV's of today. What I really found intriguing is that when the show was produced in 1968 the budget for the fictional project was $7 billion. What an enormous amount then and yet today that amount for a budgeted gov't project is still huge.
Some of the episodes, as I remember, get a little corny (especially when they travel to the future) but shows where they try to effect great events in history are integral to our desire that if we could change history we would seek to steer the Titanic away from the iceberg, persuade Lincoln not to go to Ford's Theatre, and re-route JFK in the motorcade...