When my family goes to the movies, we end up dissecting them afterwards, what worked and what didn't and why. This is one way to improve as a writer - take apart other peoples' stories. Why movies? Because you can focus on plot and characters and because they're relatively short and easy to experience. Writing mechanics are a completely different topic. You never hear someone say, "I hated that movie because it had so many typos and the grammar was atrocious!" Besides, I can sum up my position on how writing mechanics make or break a book in one word: communication. Grammar and writing are structured forms of communication. Learn the rules and why they exist so you can communicate effectively. If you stink at it, find a good editor who knows it inside and out. Then, listen to them when they tell you to fix your grammar and sentence structure. And if you can find someone who still remembers how, get them to teach you to diagram a sentence. It will do wonders for improving your clarity.
Puss in Boots was a tremendous disappointment, so much so that I regretted spending a few dollars on the DVD. Here was my favorite character from the Shrek franchise in his own movie. What could possibly go wrong? Pretty much everything. The characters fell flat. The storyline was overly simplistic. The jokes were much too adult for the intended audience (I'm assuming it was supposed to be a kids' movie). It didn't gel. All the parts were right on their own, but together, they didn't work.
What movies have you seen lately that really drew you in to the point you lost track of time and your surroundings?