Remember after watching Piranha 3D when you walked off with a set of 3-D glasses, and then wore them in public? You felt silly. These shades are different.
You could argue that the Blockbuster employee was merely looking out for Peterborough Mayor Keith Sharp's best interests—saving him 90 precious minutes!—but Sharp was not happy about being banned from renting the movie.
3D movies! They've been around, in one form or another, almost as long as cinema itself. But for every prestige film like Avatar that pushes the medium to new heights, there are a dozen Piranha 3Ds. Thank god.