of course, you have to think

Rating: 9/10 (2 August 2002)

This is not a blockbuster movie, one where the viewers are subjected to special effects and bland acting but will make money simply because it's being shown in an airconditioned theater in the summer. This is one you'll have to think about.
Never assume that anything by M. Night is going to be simple. If you've watched the trailer (it was hard to miss- it was showing before almost every movie for the past year) then you probably assume that the title "Signs" refers to the crop circles, and the words flashed through the trailer, like "a message", are indicating that the crop circles are supposed to have an actual meaning. If you watch this movie and refuse to think about it, and instead choose to simply view it as a summer blockbuster, then you will be let down. M. Night wants you to think.
*Possible Spoiler*
If you think about the title after you've watched the movie, and think about what happened in the end (m. night always has his power moment at the end), then you might conclude that the title doesn't refer to the crop circles, and the "message" was meant for only one person.
All said and done, you need to have faith that this movie is not what it seems on the surface.