This is from 2009. The 2010 live streaming update is here.

There's music and dancing from all sides. In some areas it's almost deafening as competing tunes come from different tents.

In the main area by the kever, they're dancing outside...



And they're dancing inside, upstairs and downstairs...



And they're dancing on the roof!!!



But while many serve Hashem with joy, some serve with supplications, knowing the Gates of Heaven are open to their prayers at this special time...



The white dots in the photo are ash from the bonfire above on the roof drifting down through the area and onto the black hats and coats of the celebrants.