My only problem with the movie.
First off I enjoy a good family movie, and I believe this one delivered. However I did feel like the climax was... somewhat... anti-climatic.
Now I understand there is only so much "action" that a family movie can portray these days but I was really thinking that there would be more to the ending. But I feel that the movie could have put a bit more into the ending sequence to make it more exciting without moving up in ratings, look at the incredibles for example, that ending was good in my eyes.
It also seemed that as the movie went on, the acting got worse (mostly in the last 5 minutes or so), maybe it could be chalked up to the fact that Tim Allen was required to do the most acting at the end. Portraying a person that had lost a brother and then have him returned to him can't be easy, and they had to have a household name play the main character, but the ending just... tasted bad I guess.
Also Concussion's character did a good job acting evil, but once he "changed" it was toooooo on/offish.
Other than those complaints I would say it was a decent movie, it was nice to see Chevy Chase again as well.
Overall, the first 2/3rds of the movie I'd give a 7/10, the last third about a 4.5/10. For the entire movie, about a 6/10 would be fair I'd say but I believe that if the climax would have been better it could have scored about a 7.5-8/10.