Recent advances in artificial intelligence have made creating convincing fake videos, or deepfakes, of real people possible. While the ethical implications and the creative capabilities of this amazing technology are only beginning to be explored, there are growing concerns that this technology could be used maliciously to ruin reputations and cause extensive damages. Can you spot a fake video in which a famous person is saying things that are totally untrue? For example, if you are watching a viral video of President Barack Obama, can you tell whether it's fake or authentic? A computer vision researcher, Supasorn Suwajanakorn, recently gave a Ted Talk that showed how photorealistic deepfakes can be created and how to tell whether you are looking at the real stuff.