I started this sketch page today from multiple pages in my sketchbook. I scanned all the heads of Barack that I had, and I'm combining the best ones on different layers in Photoshop. It's a great exercise for "computer" sketching practice, not to mention brushing up on my Barack Obama caricature. I'll probably add to it over the weekend, as I doodle him while he's making speeches.
I would LOVE to draw this guy for the next 8 years - he's got a very malleable face.