There are a few I could pull from but the one that stands out immediately is Repo Men.
That irked me something fierce. I mean, I thought it was a fun movie. If you haven't seen it, feel free to watch it. If you don't mind...
Honorable mention goes out to The Matrix Revolutions.

That irked me something fierce. I mean, I thought it was a fun movie. If you haven't seen it, feel free to watch it. If you don't mind...
Getting to the end and finding out that the last third of the movie that you had just watched was completely BS and not real. Fun times.
Honorable mention goes out to The Matrix Revolutions.

Neo dies. Yep, that's pretty much it.