When Tim comes into the living room and Randy is listening to heavy metal music, Tim grimaces, acts as if he can't stand it, and make disparaging remarks about it. However in other episodes, particularly Stereo-typical (1992), Tim has been portrayed as enjoying heavy metal music, even to the point of arguing with Jill how much better it sounds the louder you play it.
Jill mentions a sister named Katy. However, throughout the rest of the series, the producers stick to the following Patterson sibling names; Linda, Tracy, Jill, Carrie and Robyn.