Movies are a great way for humans to see some of our greatest fantasies played out in "real" life. And bad special effects are a great way to turn those grand human fantasies into absolute turd-burgers.
An example turd-burger, from RoboCop. (via YouTube)
For as long as there have been humans, there have been humans trying to cut corners. And biting off more than they can chew. And basically doing a whole bunch of things that result in crappy work being put out into the world. But perhaps no area of crapitude is so wonderful-yet-offensive as bad special effects in films. Even bad special effects cost a lot of money and require a lot of approvals from high-powered people, and still, they show up in your local movie theater (or on Netflix if they really turded the bed).
This new video from World Wide Interweb points out some of the most egregious bad-special-effects offenders. The video's an equal-opportunity pointer-outer, and the clips run the gamut from practical effects to green screen disasters to once again reminding George Lucas that it was a really, really bad idea to put a CG Jabba the Hutt in the Star Wars special edition.