Could a day get any worse? You've filed into the Castro Valley BART station with your fellow somber commuters only to encounter a big white poster with your name scrawled on it saying, indeed, you do look fat in your jeans.

"I take BART every day to work into the city, and I thought someone was playing a joke on me," said Sara Marshall, 26. "I just recently broke up with my boyfriend and it wasn't a nice break-up. In fact, it was kind of bad. So I thought, 'No way. Could he have done this?' I spell my name without an H, but it's still strange."

Then she realized the poster might have something to do with the upcoming movie "Forgetting Sarah Marshall," about a struggling musician (screenwriter/star Jason Segel)...