War of the Worlds isn't bad. It has all sorts of Spielbergian gimmicks, many of which you've seen before, and the 1898 story has melded with the 1938 radio play and 1953 movie in a post-9/11-Afghan/Iraqi Quagmire melieu. The skiffy movies of the 50s prepared us for a nuclear war. With movies like this, the next terror attack won't be nearly as scary. "When the time is right, we'll take 'em by surprise like they took us."
But in the end, G_d decides...
Loads of special effects, many of them good. If you see iot, I highly recommend searching for a theater with very good sound.
On the Shockwave scale of 9-23, I'd give WotW about a 17.