The most anticipated run-up to the London Games starts when the sun's rays will light the Olympic torch in Olympia, Greece. And you can watch it live tonight/Thursday morning via Ustream or below:
The ceremony begins at 3 a.m. ET. Cross your fingers it doesn't rain.
After the lighting, the torch will be relayed throughout Greece, ending May 17 at Athens' Panathinaiko Stadium, the site of the first modern Olympic Games in 1896. From there, the torch will be sent to England, where it will go on a lengthy route through more than 1,000 towns in the United Kingdom before arriving in London for the lighting of the Olympic Cauldron during the Opening Ceremonies on July 27.