2. Leia Points Out That Nothing in Cloud City Makes Sense, And Han Ignores Her - The Empire Strikes Back
Theres a scene in Empire where Leia, after her all-important costume change, begins to point out all the things that clearly suggest something is really, really wrong on Cloud City. How does Han respond? He kisses her on the forehead and tells her to calm down. Guess what? Ten minutes later, they walk into a trap. Because Han told one of the key leaders of the rebellion, presumably one of the best strategic thinkers they have, not to worry her pretty little head. And she listened. Thats just stupid.