An orchestral version of Sweet Home's battle theme was used in a Japanese trailer for the original Resident Evil.
Contributed by Mass Distraction
Nobuko "Nokko" Yamada, who plays the youngest character, Emi, in the original Sweet Home movie was the lead singer in a band called Rebecca. What makes this interesting is that the game that was Sweet Home's eventual successor, Resident Evil, had its youngest character named Rebecca.
Contributed by Mass Distraction