With the Democratic primary no longer the media's obsession, what else can we line television screens with wall-to-wall? Ah yes, the national conventions! In what can only be described as a move for bragging rights, MSNBC will have 20 hours of live programming, from 6am to 2am, for each of the four days both the Republican and Democratic conventions are taking place. Twenty hours. (PBS, meanwhile, will offer continuous live coverage, while NBC, ABC, and CBS will all offer three hours of live primetime coverage.) This means Keith Olbermann, Chris Matthews, Tim Russert, Chuck Todd, Joe Scarborough, Rachel Maddow and all the rest of 'em better stock up on their adult diapers, because there will be no leaving the studio chair once this monster rolls into town. And for Phil Alongi, the NBC News exec producer for specials who will head all of this, it's one more chance to juice this spike in ratings from the new crop of politically interested viewers, who will stop caring about most of this come November.