A roundup of TV people from in front of the camera and behind the scenes who have passed away.

• Dennis Letts: He was a teacher who taught at universities for 30 years and then decided to get into acting. He appeared in several TV shows, including Walker, Texas Ranger, Once and Again, and The CBS Summer Playhouse, as well as the TV movies Dallas: The Early Years, Challenger, and The Last Prostitute. On the big screen he was in Cast Away, Infamous, Passenger 57, A Perfect World, and many others. He died of cancer at age 73.