Actress Jennifer Jason Leigh is often self-conscious about her facial expressions whenever she's out and about in public - because strangers always approach her and tell her to smile.

The screen star believes that her dark and quirky roles in such movies as SINGLE WHITE FEMALE, LAST EXIT TO BROOKLYN and Rush have something to do with the public perception that she's a moody person in real life.

She says, "I think sometimes people have an assumption that I'm gonna be intense. When I'm walking down the street (strangers tell me to smile).

"I smile if I'm in a conversation with somebody, or something amuses me. But when I'm walking down the street and I'm alone I'm not (smiling). I would find it weird if I saw people just walking down the street (smiling). I'd wonder what was wrong with them."