Rock picks on Simpson, Lachey

Comedian Chris Rock left pop couple Jessica Simpson and Nick Lachey red-faced when he blasted them for kissing during his act.

The celebrity pair - who have recently been subjected to frenzied reports about the state of their marriage - were part of the audience at Rock's stand-up show at the Laugh Factory in Los Angeles on Saturday, and decided to occupy their time in the balcony with some physical intimacy.