Like Return of the Jedi and its fake title, Blue Harvest, lots of high-profile films use decoy names to hide their true identity until release. Here's the best of the best, from Superman to Harry Potter, incognito on an obvious one-sheet.

Hoping to keep shooting a secret, most mega-budget, tentpole productions employ a bit of sly misdirection, using clever titles that are intentionally nonsensical or cryptic. It's a little game of hide and seek the studios and crazed fanboys play, trying to keep the prying eyes from set locations and the screenplay cloaked in mystery. Some of these fake sci-fi and fantasy film names are pretty cool, but most land with a shoulder-shrugging thud, offering little hint of the magic behind the mask. Here they are, paired with their proper posters ...

(via Empire Online)