Pay attention, kids: Rapper and movie enthusiast R.A. the Rugged Man is back with another session of Film School. In today’s class, R.A. explores the dark history and menacing future of 3-D.

“James Cameron's like, 'Oh, let's do "Titanic" in 3-D,' so now Scorsese's gonna be like, 'Raging Bull!' The blood will fly at the camera, DeNiro's slapping his wife in 3-D,” the Rugged Man foretells.

So what is the worst misstep of 3-D movies past -- and what does the future of extra dimensions hold? Watch the video and prepare to get schooled.

And if you missed it, check out the last episode, where R.A. Goes Hollywood.