Fortune’s annual Most Powerful Women Summit starts this evening in Washington, DC with Lloyd Blankfein presenting The Goldman Sachs & Fortune Global Women Leaders Award. He’ll be followed by what’s sure to be an entertaining and informative conversation between Speaker of the House Nancy Pelosi and the writer and director Nora Ephron.

Tomorrow morning, tune in as Fortune’s own Carol Loomis sits down for a candid conversation with her longtime friend, Warren Buffett.

Stay tuned to this section of the site for all coverage of the Most Powerful Women Summit 2010. Click here to register for the virtual conference.