It’s April 20, which can only mean one thing: It’s National Look-Alike Day. You might not be familiar with the under-the-radar holiday, which is rather self-explanatory. But you should give the occasion its due, especially with so many look-alikes flooding our television screens, our computer monitors, our cell phones, our tablets and, heck, our entire world on a daily basis. Admit it. You’ve watched a sporting event in the past and thought to yourself, “Wow, that person looks familiar.” And it’s not because you’ve seen that athlete perform several times before. It’s because he or she resembles someone else you’ve come across. Many times, ...