Fillmore and Ingrid Cameo Appearance
/10 with 1 votes
During the episode "Halloween Bash," there's a scene in which you can see Fillmore and Ingrid from the show Fillmore.
Hidden Video Game Sounds
/10 with 2 votes
When you see young Fu Dog playing video games, listen to the background after they do an effect on the show. The music is from Super Mario Bros!
This will happen throughout the time travel.
Super Mario Bros. is a game from 1986.