In 1980, Universal tried to reduce the show's budget (which was a minimum of $600,000 per episode). The studio's proposed cuts included reducing the special effects and having the Hulk appear only once per episode. Another proposed change was to add a character who would travel with David via a motor home (providing at least one stock set to be used, and curtailing the number of sets used in each episode). However, all those ideas were dropped when CBS provided more money to keep the quality of the show intact.
Damn! Car, you're making me angry, now if you get me angry, you know what I'm gonna do? I'm gonna turn you into a tin sandwich!
When the Hulk breaks through a brick wall, (typically at the end of the show) the clothing that he wears changes between his approach to the wall, and to the view of him running down the alley, and this is repeated in several different episodes, which clearly looks like the same stock footage being re-used.
In the opening sequence, the lit up gamma ray display can be seen with the word "anger" on it, which is zoomed out to show the full word is "danger".
In the U.S. syndicated airings of the episode "The Hulk Breaks Las Vegas," the scene where the Hulk wreaks havoc at the casino is deleted. (Nonetheless, it is restored in the Sci-Fi Channel telecasts.)