Since only so many people can be crammed into the ballroom at the Washington Hilton to watch Conan O'Brien and President Obama live, the White House Correspondents' Dinner is being broadcast on TV and online, too. All Saturday afternoon, C-SPAN will be airing archival footage, with live coverage starting at 6:15 p.m. CNN's Don Lemon, Brianna Keilar and Nischelle Turner will be anchoring that network's coverage. Live remarks start at 10 p.m. In addition, CNN will broadcast celebrity arrivals from 6 to 7 p.m. Finally, for the first time ever, E! News will be live-streaming celebrity arrivals, as well, with E!'s Alicia Quarles and Marc Malkin kicking off their online coverage at 6 p.m.