#1: Suzanne Somers Secretly Appeared in the Opening Credits in a Wig
In the early seasons of Three’s Company, the opening credits feature a brunette walking along the beach who distracts Jack Tripper and causes him to crash his bike. Many viewers assumed she was just an extra, but she wasn’t.
The woman was actually Suzanne Somers wearing a wig. The producers used her in disguise so they wouldn’t have to hire another actress, and the quick shot helped keep the moment playful and anonymous. It’s a blink-and-you-miss-it detail that longtime fans still enjoy spotting.