1. "Unbroken" (2014)
    "Hey, did you see 'Unbroken?' Did they end up breaking that guy?" We all know what's going to happen, but if you're asking me to watch 137 minutes of people trying to break a dude, don't name it this.
  2. "Master and Commander: The Far Side of the World" (2003)
    Based on a series of books, sure, but add subtitles if and when the sequels arise, guys! No need to bust out a monstrosity like that from the get-go. Title was much like the movie: sort of good-seeming, but actually boring and way too long.
  3. "How Do You Know" (2010)
    This was a rom-com, I'm assuming? Impossible to be sure, because every time you look at that title you fall asleep. Especially sad because James L. Brooks had mad title game earlier in his career; "Terms of Endearment" and "Broadcast News" are both excellent (titles (and movies)).
  4. "World Trade Center" (2006)
    This is what Oliver Stone came up with for his 9/11 movie. There is no second level here, no punny subtext (unless you want to try spin that the real "trade center" of the world is... the human heart). And it's almost impossibly unevocative -- it's the equivalent of a JFK assassination movie called "Book Depository" or an Oklahoma City bombing movie called "Alfred P. Murrah Federal Building." It's probably not easy to name a movie based on a real-life tragedy, but you could do better than this.
  5. "X-Men Origins: Wolverine" (2009), "The Wolverine" (2013)
    This makes the librarian's son in me want to scream. I don't care if people hated the first movie -- PICK A FUCKING TITLE FORMAT AND STICK WITH IT.
  6. Unfaithful
    What did we think was going to happen? Who will be unfaithful? Will it end badly for the unfaithful character?
    Suggested by @kate81