Also, as far as the movies go, you might want to be cautious about the language. I don't have any kids so I don't have a good viewpoint on this, but I'd hate to be the father whose kid asks, "Daddy, what's a 'motherfucker'?" Had I asked that question as a kid, I would have been answered by having my mouth washed out with soap.
Pretty late, man... I saw it when I was 2. My brother saw it at 1 1/2 even. The first thing he said in his life was "choppah".I saw Predator when I was 4 and then I saw Predator 2 when I was 6
I'd leave it up to the parents. I saw Predator when I was 9, and Predator 2 when I was 12.
I wouldn't sxpose a kid to any of the Predator movies until I thought that they'd be ready for them.