NASA JPL Live, Ustream.TV: UPCOMING EVENTS: NASA Follows Asteroid Flyby Friday, Feb. 15, 2013 at 11 a.m. PST (2 p.m. EST) For more information, including ...
Live feed from nasa available from 19:00
There's also a nice graphic on this page showing where in the night sky it should be. Providing a clear sky I'll be out trying to find it.
BBC News - Asteroid 2012 DA14 set for record-breaking Earth pass
Simulation of '2012 DA14' Asteroid passing Earth later today.
Asteroid Discovery - 1980-2012