Signspost - I was debating whether or not to comment on Signs, and I've arrived at the decision that I'll post a couple reviews (I found myself agreeing most with Roger Ebert's praise), mention that I really enjoyed it (a solid B+) and leave it at that. The less one knows about the movie going into it, the better.

For post-viewing reading, here are some notes on the making of the film, from Entertainment Weekly.