When Drummond introduces the boys to their new bedroom, Arnold declares "This is better than what I saw on "The Brady Bunch" (1969) . Interestingly enough, Howard Leeds was a producer and writer for both series. A few of DS' episodes were recycled scripts of TBB.
First episode to feature the catchphrase "Wha'choo Talkin' About?". The catchphrase, was used for the remainder of the eight year run.
As Arnold jumps into the hot tub, you can see a surgical scar on his left abdomen. ( Gary Coleman had multiple kidney transplants. )