3. After bringing the doomed Saeki family to life (and death) in both Japanese films, actors Takako Fuji, Takashi Matsuyama and Yuya Ozeki all appeared in The Grudge, reprising their roles of mom Kayako, dad Takeo and son Toshio, respectively.
4. While Toshio was almost never without his beloved black cat Mar, in real life, poor Yuya was terrified of cats.
5. Despite not sharing any scenes together, Jason Behr (who played Karen's ill-fated boyfriend Doug) and KaDee Strickland (who played Susan, whose brother moved into the home haunted by the Saeki family) met on set and began dating after discovering a shared interest in Japanese culture. They got married in 2006.