Sara Underwood spanked Candace Bailey on G4’s Attack of the Show. It’s called ‘groping’ on the video but they’re definitely spanks in my book, pretty hard ones too.
She repeated the trick a week or two later. (link should take you straight to the good bit.)
She also visited an S&M dungeon in one episode (see top picture).
Sara Underwood is a former Playmate of the Year who appeared as herself in the movie The House Bunny. The right picture, which was posted recently by Chross on his forum, is Alison Haislip another Attack of the Show presenter.