The giants are on a rampage as Warner Bros. comes out swinging in presenting their first clip from X-Men: Days of Future Past director Bryan Singer's fairytale adventure Jack the Giant Slayer. Watch as these massive beasts charge at Jack (Nicholas Hoult) and his small army of giant killers. Windmills are thrown, lives are in danger, and it looks like a lot of goofy fun. The movie isn't tracking very well, so the studio is making a major push this week. On Monday, we are promised a third full-length trailer that will surely push us over the edge and into the theater. What do you think? Will Jack the Giant Slayer slay at the box office?