IS THIS WHAT YOU MEAN BY DIMINISHING RETURNS, PROF?: The return of The Osbournes in the US looks set to be a hugely underwhelming non-event, as even the fans of the first two seasons are struggling to see the point in a half-hour dedicated to what Kelly thinks about Christina Aguilera. As David Hinckley observes Let's be honest here: This is a discussion that would empty out an Internet chat room. Like, who cares? But maybe being on TV gives the exchange a kind of subliminal validation, as if it must be interesting because famous people are having it.