Skip this.

Rating: 1/10 (14 July 2003)

This was the most disappointing film I've seen since Mission to Mars (2000).
Just like M2M, Signs had a few pretty good actors and a proved director (Brian DePalma also directed the Untouchables). Both were films riddled with plot holes that finished with cheesy endings and were supposed to have some sort of "deeper meaning." And by the end of both films, I was glad I had only spent less than $5 each on renting them.
Signs had all sorts of problems - so many that I won't list all but one - the biggest problem of them all. But this is a major spoiler, so stop here if you don't want to be spoiled.
BEGIN SPOILER AND PLOT HOLE
Water is poisonous to the aliens. So why would they invade Earth (which is at least 2/3 made of water), run around in crop circles (plants on Earth are full of water), and harvest humans for their meals (humans are at least 3/4 made of water). Duh.
END SPOILER
That pretty much sums it up for me. It's this kind of attention to detail that makes this film deserve just 1 star out of 10. It's better than Teenagers from Outer Space, but not by much.