Asteroid 2012 DA14 is passing by earth today. It’s closest approach (17,200 km) will occur at 2:25 p.m. ET over the Indian Ocean. Alan Boyle provides some info on how to watch it pass: Watch asteroid 2012 DA14 buzz past harmlessly, via streaming video – Cosmic Log
Observers in that area will be able to see it with binoculars or small telescopes. NASA JPL has a live webcast here of a telescope view: USTREAM – NASA Follows Asteroid Flyby.
Here’s another webcast: The Virtual Telescope Project 2.0: Virtual Telescope’s WebTV
This video from “Samford Valley Observatory in Brisbane, Australia, shows the progress of asteroid 2012 DA14 across the night sky as it nears its closest approach”: