The impact probe sent by Deep Impact struck the comet Tempel 1 as expected last night. The mother ship beamed piles of information back to NASA, who are examining the data in the hopes to uncover clues about the Solar System.
News.com: Slideshow of the impact (including an orbital map). v.cool.
Nasa.gov: Composite animation of the approach and impact, made up of images snapped by the impact probe as it approached. Requires QuickTime.