- Barack Obama's Flickr page, with photos from election night.
- Change.gov, the office of the president's transition page. The most interesting thing about this, I think, is a portion where you can send in your suggestions. Open-source democracy?
Even though these are small gestures, I think they're extremely relevant and important to a lot of people, especially coming on the tail-end of an era where the presidency was shrouded in mystery.