I'm adding one quickly. Enough with the goddamn Schizophrenia plot twist.
That, and cop dramas. Few and far between are good while many are too generic and by the numbers.
Pointless Remakes. Legally Blond 3, Disney Part II's, most of those straight to video flicks in general suck nuts.
The "less is more" endings, the ones that just sort of end. No Country For Old Men was a good example, where the explosive climax turns into a dim ember. Broken Flowers was fucken horrible for it. The whole "its about the journey and not the destination" thing annoys me.