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.
Gary's name, Hobson, implies the nature of the show, a Hobson's choice. He receives information and is in a position to help, sometimes a little, sometimes a lot. The choice is to act or not, a Hobson's choice.
A shot used throughout the series is of an accelerated sunrise behind the Chicago skyline, as seen from the lake shore. It has to be a sunset played in reverse, because the shoreline runs roughly north-south, with Lake Michigan to the east.
Sunrise is normally over the lake.
Chuck: They say things happen for a reason, but that reason may not always be clear. In time, with faith, the meaning may emerge. What was, what is, what shall be. Pieces of a puzzle, falling into place.