The newspaper used by Gary throughout the series was printed by the Chicago Sun-Times for each episode.
The character Gary Hobson was named after the Hobson's choice, which implies the nature of the show. He receives information and is in a position to help, sometimes a little, sometimes a lot. The choice is to act or not.
Carl the cat played "Cat" on this show. However, the cat's role was uncredited.
"Carl" was an understudy to cat actor Panther, a shelter rescue cat adopted by trainer Bill Casey. The crew referred to both cats as "Carl."
During the fourth season, W.G. Snuffy Walden's main title theme was replaced with "Time Has Come Today" by the The Chambers Brothers, though Walden continued to get credit.