As long as we are slipping into TV series - my personal favorite favorite - EVER - was Paladin. (Have Gun Will Travel).
Sort of a Shakespearian Cowboy morality play with an un-erring gunslinger who played Chess instead of Poker and drank Cognac instead of Whisky.
Not surprisingly, it was done by Gene Roddenberry before the classic Star Trek - which was also something of a cowboy show if you think about it.
Richard Boone was reported to have been bored with the character, but nobody else could have played it.