1.
Harold Lloyd in his iconic clock hanging scene from Safety Last...
...and the revealing set and perspective trick they used to make it happen.
2.
Charlie Chaplin in Modern Times skating backwards and then stopping JUST at the edge of a giant hole...
...and the clever glass matte painting technique they used to create the lower levels.
3.
These very impressive eye movements by Colleen Moore in Elle Cinders...
...and the trick of exposing only half the film at a time to make it happen.
4.
This mind-boggling clip of Mary Pickford kissing herself in Little Lord Fauntleroy...
...and the very elaborate matte painting setup they created so Mary could actually move BEHIND herself.
5.
Douglas Fairbanks using a knife to slide down a sail like it's NBD in The Black Pirate...
...and this genius pulley and counterweight rig they created to let him slide down with ease.
6.
Buster Keaton driving over two trucks at JUST the right time in Sherlock Jr....
...and the reveal that it was actually two separately filmed shots using the popular matte technique again.
7.
And finally, Jesus ~healing~ two lepers in Ben-Hur: A Tale of Christ...
...and the reveal that the lepers' disappearing makeup was achieved using specific color filters.
Talk about some serious movie...