Jake Gyllenhaal disturbed by sister's role

Jake Gyllenhaal admitted that seeing his sister undressed and getting slapped was very disturbing.

The 26-year-old actor needed to do everything to stay seated during the scenes in the movie Secretary, where his sister played the part of a woman seduced by her sadomasochist boss.

When asked if he found the erotic scenes strange, he replied, "Well, it wasn't necessarily erotic for me."