The past three times I have done this has been purely in jest (although I'm still holding out that Michael Bolton and Michael Bay are the same guy). This time I've found an honest-to-goodness resemblance that is so uncanny that if you told me they were the same person and I didn't know any better I'd believe you. A lot of people say Zooey Deschanel looks a lot like Katy Perry. They're not even close:
Could Zooey Deschanel really be Debra Winger in disguise? You Decide.