Throwing the kids off the roof
First, I completely agree with other posters that the scene where Owen Wilson threw his kids off the roof was laughably unbelievable, to the point where it did distract from the overall movie.
I'm guessing the writer(s) were trying to put the father in an impossible situation where he had to choose an action that could either save his kids or kill them. It's regrettable that this was the best they could come up with. It would have been eye-raising if it were the Rock, or Terry Crews, or Arnold attempting the throw. But for Owen Wilson to try that...yeah right.
And the location chosen was a poor, poor choice as well. I really didn't believe the wife would have made the jump given the distance between the two roofs, let alone Wilson throwing a kid.