Saw it today, was a bit disappointed. Never read the book, nor seen the TV movie, but have heard several people comment on how scary it is and how interesting the twist at the end was. It was creepy in places, but all the scares felt cheap and obvious - you knew when they were coming. Daniel Radcliffe didn't have much to do besides look nervous and swallow a lot, but he was a servicable lead, even if it was hard to believe he was the twenty five year old father of a four year old.
The "twist" at the end was no such thing either. Rather, it made everything that gone before seem utterly pointless.
The film's had mixed reviews, but I can't help but feel it was a wasted oppurtunity. Yes, it was a bit crap.