I can't remember the worst movie I've seen at home. I've seen so many lol. The worst theater movie had to be the one missed call remake. I watched the original Japanese film later and realized the missed important plot points that were vital to the story. Also it was neutered from a R rated Takashi Miike film to a boring pg-13 horror film. On the bright side it introduced me to Takashi Miike and I've been a fan ever since.