Conner says "Dude, the guy's a teacher, not Batman!" and scoffs at the idea that an item in Tommy's study could reveal a hidden cave (which turns out to be true). The Batman's Batcave entrance with a hidden switch in Bruce Wayne's study was most famously shown in the 1966 series. It is significant that Conner delivered that line; Jimmy Napes, who plays Conner, is the great-grandson of Alan Napier, who played Alfred in Batman (1966).
Tommy is seen wearing a mix of the five Ranger colors he has assumed, a pair of green pants, a black undershirt, a white jacket and a red shirt.
The episode's title is a reference to the first episode of Mighty Morphin Power Rangers (1993), Day of the Dumpster.
None of the Rangers appear morphed in this episode.
Dr. Oliver lives at 1992 Valencia Road.