Journeyman is a pretty good show, as far as it goes, but not really a great show. Goodnight Sweetheart, a British time travel comedy, is a great show, at least for the first season. Gary Sparrow, our hero in Goodnight Sweetheart, time travels back to London during the Blitz. He and his mate instantly realize what this means-they can get stinking, bloody rich!Our hero in Journeyman, well, he’s a total patsy so far. He doesn’t want to get rich, he wants to be a hero. Even when another time traveler tells him he has to have current era money and…