This is the first time I've fully watched a series hosted by Jack Narz (I've only seen one-off episodes on YT as well as various clips, including a montage at a Game Show Congress that he attended), so getting the opportunity to watch Narz in action on "Concentration" is a treat. A definite solid host who takes the game seriously but is open to having a little fun from time to time. I do agree that his hosting the format is better than Trebek, whose style on CC was a tad too loose at times.
The Double Play bonus round is not perfect (given the mechanics of the times, doing something similar to the CC car game would be impossible), but it's definitely a challenge. And I like the use of what's essentially trivia as answers for the second half of the round.
JD