Outstanding concept for a Western series. The hero chases bad guys much like Quixote chased windmills. The finest example, if one could only watch one of the whole series, that one episode might be "Trial at Table Rock." It illustrated Richard Boones' best qualities of eloquent mercy with murderous justice.
Other episodes included early Charles Bronson, James Coburn, and many others - before they each became stars.
Also of note is the fact that many of the series were original scripts by Gene Roddenberry of "Star Trek" fame.