There are a couple of examples, but this one will be first.
I had a coworker who was gorgeous, late twenties and had short red hair. She kind of looked like Maggie Gyllenhal around the time she starred in "Donnie Darko". She had a pretty cool job, and was also very pleasant. It turns out that she was a part time model and had a modelmayhem account. Another coworker had found out about it, and told me. We kept it to ourselves because we liked her and didn't want to cause problems for her.
I would intermittently Google her name, along with her alternate "model" name. And one day, hit the jackpot. She had posed for Playboy in a "housewives" issue. Completely naked. And as if it could get any better. She also made a video for Playboy as part of the promotion. So, not only did I have a coworker who I had seen naked, but I also knew she had a clit wring, a tiny red landing strip, and her recounting cool sex stories with her husband. That was at least 10 years ago. Good times!