The pyrotechnics used in Billy's brain-switching machine accidentally caused both Amy Jo Johnson and David Yost to catch on fire while filming. Because of this incident, Amy Jo would later be wary of being too close to such kinds of special effects equipment.
After the mind switch, Kimberly's valley girl accent seems to be more severe once she's in Billy's body.
The Rad Bug is seen again (introduced in Big Sisters) in Billy's garage.
The lamp in the Sentai footage is noticeably different from the prop used in the original footage, the latter is a toy of the magic lamp from the 1992 Disney film 'Aladdin'.
It is unclear if the dog that attacked Bulk and Skull is Billy's or a neighbor's dog.