Dont forget about White Noise! Darkness reminds me of some other movie where they had to stay out the darkness. ONe like it was Darkness Falls, but there was another....I forget the name.
imdb.com says this movie(Darkness) came out in 2002.... lmao.. I guess it came out in other places, but not the US, but now its going to be released now that it has a PG-13 rating..