The Best Illusions of the Year
Every year, the Neural Correlate Society (which promotes scientific research into how sensory perception affects the brain) holds a contest for the best illusions of the year, and they’ve announced their top ten such brain-benders for 2014. To qualify, the illusions had to be published no earlier than 2013, or be previously unpublished.
They’re really are fun to look at; it’s amazing how your brain can be tricked