Avatar.

[Alex]

I have no real problem with the plot. Yes, it is cookie cutter, but so are 95% of the loved big action movies and 85% of all movies. I thought it was a cookie cutter plot well presented.

Although, there's not really any objective indication that his writing negatively impacts the response to his movies. If the balance is off it certainly doesn't seem suppress the number of people who go to see the movie, and then see it again. Seems like a good example of "If it ain't broke, don't fix it."