Tom Schutt, a high school math teacher in Washington, D.C., received treatments for cancer. As a result of his chemotherapy, he lost his hair and a lot of weight. So while in a Starfleet uniform, he looked a lot like Captain Jean-Luc Picard from Star Trek: The Next Generation. After his cancer went into remission and his chemotherapy ended, Schutt regrew his hair. Remove one rank insignia pip and he looks like Commander Will Riker!
-via Fashionably Geek