There’s nothing like a good optical illusion to make you put things in perspective and remind you that things are not always as they seem.  Back in June of 2010 we put together a compilation of 8 of the best optical illusions on YouTube, but we thought it was time for an update.  Here are 15 of the best optical illusion videos to grace YouTube, so take a seat and prepare to have your eyes play some crazy tricks on you!


Read More: 15 Mind-Boggling Optical Illusion Videos On YouTube