Sandra Bullock in PremonitionPREMONITION

Note: Plot details will be revealed, so here's the Spoiler Alert for those of you who haven't seen the film, and for the two or three of you who haven't seen the film's previews, which give away the entire movie.)

Hollywood entertainments, in general, aim so low that it's disheartening to chastise one for aiming relatively high. But the psychological thriller-cum-melodrama Premonition is infuriating precisely because of its lofty ambitions. For a goodly stretch of the film - nearly the entire first hour - the plotting is clever enough and the direction (by Mennan Yapo) suggestive enough to keep you focused and alert; you're eager to solve the movie's many mysteries along with its heroine. But I left the auditorium frustrated and a little bit angry, and still haven't figured out exactly whom to blame this on.