Boogeyman - Letting the Audience Decide

"It's been the largest struggle on the project."  "Each movie has its own challenges that are unique unto it. In this particular case, the boogeyman—How much do we show? When do we show him?—all of those questions needed to be answered. And, ideally, we've answered them in what is hopefully the most satisfying fashion."

Tapert also goes on to say:

"What if [I] told you test audiences decided it?"  "Sad as that is, because I think in [director Stephen Kay's] mind, he would have loved to have kept this all to the very end of the movie. Even after we show the boogeyman, he would have liked to put it back into a psychological realm. But the horror audience just couldn't go there with him. So when you tried to tell them something different at the end of the movie, then what they had witnessed in the last 10 minutes just wasn’t working."

You can read the rest of the article here, where Tapert goes on to talk about how some of the earlier drafts of the film showed the boogeyman in different incarnations, but due to budget and time it couldnt be possible.

Boogeyman is scheduled to be released in theaters on February 4, 2005.

Source: SciFi Wire