Several months ago several news websites got a hold of what seemed to be a draft of Zack Snyder's Batman vs Superman (now titled Batman v Superman: Dawn of Justice) script. Some found it to be so authentic that they ran news story's with plot points and cameos that we would see in the film. Well it was all for nothing because the screenplay was completely fan-made. Some news sites thought that Clerks director Kevin Smith conspired with WB to purposely "leak" this fake draft online. That turned out to be false also. The real author can be found on Twitter and you can go follow him @SonOfArrogance. He has given us special permission to post said script online for all to read! This prank is definitely up there along with Justin Bieber claiming to be cast in Batman vs Superman as Robin..
Lastly, it only took him 5 days to write the first draft but has since been revised...