Well, asteroid 2005 YU55 has come and gone (well it's still visible in good scopes at magnitude 12, but it's moved past the Earth-Moon system). Thousands of people watched, either with their own scopes, rental scopes or on webcasts, as a faint dot skimmed through the sky at absurd speeds.
And utterly failed to impact the Earth, orbiting satellites or the Moon, or cause earthquakes, CME's or rains of toads. Just like us boring astronomers said.
stts internet connectivity for many hourse and could not follow the events or commandeer a telescope.
Initial images and an animation from Astroswanee here.