Usually, when we catch a celebrity hitting up the clubs when they're supposed to be in rehab, we tend to see a lot of covered faces and embarassed posture - but that certainly wasn't the case with Robbie Williams! The pop star almost seemed happy to be caught slipping into and out of Hyde last night, mugging for the cameras and joking with our videographers on the way out. Of course, by his own admission Robbie's "almost off everything" - let's just hope he never goes off his sense of humor!