For me this show ranks as one of the 10 best TV shows ever made. It resonates with me even today, and I think Roy Thinnes' performances, especially in the first season, are brilliant in their subtlety. I guess what really hits me about this show is how you have a man, David Vincent, who was living in a very conventional 60's worldview--until the night he makes one wrong turn and ends up having his safe, comfortable little existence turned upside down. Somehow I see a parallel between David Vincent and the title character of another top ten TV show - THE PRISONER. Both Number Six and David Vincent have been dragged into worlds of great excitement and adventure - but both are also modern equivalents of Sisyphus, forever doomed to struggle against overwhelming opposition. Both Number Six and David Vincent are actually tragic characters. The trap of most TV shows - that the status quo must be maintained from episode to episode to keep the series going - proves in this case to be a great asset to the nightmarish quality of the premise. Also, you never truly see who the aliens "are", any more than you find out who's running the Village.
Watch this show along with THE PRISONER. You'll be amazed at how much is going on within the "confines" of conventional TV drama.