In case you're not in a position to see the transit or like here, under clouds, here are some links to live or near live video feeds and movies. The transit itself starts in a couple of hours more or less (approx 6 PM EDT), but Venus is already visible as a dark disk in front of the solar corona
in SOHO spacecraft images below.
from various solar observatories around the world.
SOHO spacecraft feeds
Lots of interesting wavelengths at the above sites, including the coronographs on SOHO and many H-alpha full disk in addition to white light. Post your own photos here if you can!! Wooo! Almost as good as Yo-Kuppi live tracking :)