A couple of months ago we wrote about how we just couldn't understand why there are so many efforts to develop mobile TV when a compelling use case hasn't been found. Well, looks like we spoke too soon. Apparently "leading entertainment executives" believe that babies will be clamoring for mobile TV as a 21st century replacement for the rattle. Kids are given rattles because they chew on, throw, pound, and break things. Rattles are cheap. While the age at which kids get their first phone keeps getting younger, will that many parents actually try to pacify a screaming baby by handing him an expensive, breakable, video-enabled cell phone? As we've noted before, mobile video is unlikely to catch on if no specific, realistic need exists. But of course entertainment execs, who see everything as a platform for their content, won't pass up a chance to try to hook the next generation of viewers.