It's late and I'm tired, but I wanted to mention two highlights of my day. The first was an hour-long talk by Sean Solomon, a top scientist for the MESSENGER mission currently exploring Mercury by satellite. Before the spacecraft arrived, I wrote an article about Mercury's geology that is useful background for the discoveries Solomon spoke of. I'll be updating the article soon, or supplementing it.
The second was an hour-long talk by a dazzling young scientist, Taylor Perron of MIT, who explored ways of looking at landscapes and using mathematics to extract scientific beauty from the tantalizing patterns that they display to our eyes. Both talks were recorded, and they'll be put online soon by the AGU. Both are listed on the meeting site, so keep an eye on that page for updates. Both are well worth viewing at home.