This was Brad Dourif's personal favorite Child's Play movie until Curse of Chucky (2013) was released.
The date on Tiffany's newspaper clippings at the beginning of the movie and the date of death on Charles Lee Ray's tombstone is 9th November 1988, the release date of the first Child's Play movie.
Also in the evidence room in the beginning of the movie, there is "The Crate" from the movie Creepshow (1982).
There was a planned album of love songs featuring Brad Dourif and Jennifer Tilly singing as their doll counterparts, Chucky and Tiffany. Its revealed in the movie commentary that Tiffany was to sing "Killing Me Softly With His Song", Chucky was intended to sing "House of the Rising Sun" and the two were to share a duet of "Hit the Road Jack".