David Letterman
When David Letterman first got an interview with Selleck in 1993, the conversation shifted to the lack of success he was having in Japan. Aside from sharing that he felt lonely during the four months he spent in Japan, he also said that nobody recognized him there.

David Letterman
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Frank Reagan
More recently, he has appeared on the small screen as police commissioner Frank Reagan on Blue Bloods. Here’s an interesting tidbit: it is not unusual for him to be saluted by actual officers whenever he steps out of the set. Officers are meant to salute every police commissioner, so it’s a testament to his terrific acting skills that he gets mistaken for a real one. Props!

Frank Reagan