Fans of the newly launched Bravo off-beat brainchild of programming exec ANDY COHEN called WATCH WHAT HAPPENS LIVE should set their tivo for tonight’s installment featuring late-night star JIMMY FALLON as guest. The bright new addition to TV’s late-night landscape, WWHL! was originally devised to highlight talent from the ever-expanding roster of Bravo reality programs but has gone on to become the most notorious live televised cocktail party in TV history. We caught up with COHEN at Pasadena’s Langham Hotel recently where he was attending the semi-annual TCA press event and he talked about the delights of being able to drink on the job.