In the final shot where McCloud and Bubba stroll off into the distance, Dennis Weaver's stunt double is used to make Bubba look even bigger (Weaver was six feet two inches, the double just five feet eight).
In the bar the Seagram Gin sign is partially obscured (so that only "agra" is visible) so as to not actually advertise the product. At that time it was illegal to advertise liquor in most States.
The $10,000 would be equivalent to $58,500 in 2016 after adjusting for inflation.
Jackie puts seven tablespoons of coffee into the coffee pot. Apparently Stefanie Powers lost count while she was speaking her lines.
The episode title is taken from a line spoken by Jimmy Cagney in the film White Heat.