Not really a diary, but I couldn't find an open thread to post this in. Pete Souza is the official White House photographer and has done some wonderful work during Barack Obama's Presidency.
He has an album of work from before Barack Obama was a President, that is well worth taking a look at prior to the President's speech tomorrow. The work is all copyrighted so I can't even post a sample, but it is gorgeous and worth clicking through to view.
The Rise of Barack Obama