300
That movie failed just in every way possible.
Yeah, let's go see 300, a stupid movie about burly men screaming and killing stuff!
Oh, or we could keep cutting back to an awful flow-disrupting political subplot that literally could have been cut completely and not affected the rest of the movie. Yeah, let's spend half the movie on that.
I repeat my Transformers argument: It should've been a movie about burly men killing stuff. How do you fuck that up?