Rabbi Noach Kamenetsky of Barnaul, Altay, FSU caught on videotape having sex with a prostitute – while wearing his yarmulke.
Here's the link but BEWARE! The video is pornographic and very explicit.
Here's the link on Chabad.org to his Chabad House:
And here's what you get (as of 9:00 am CDT today) when you click that link: