Thanks, everyone, for all the congratulations and good wishes, here, elsewhere on the Internet, and in person! Looking forward to 2012!
Note: Above photo is of dunkleosteus, a placoderm (armored fish) from the late Devonian (predated the dinosaurs by millions of years, but it's still really cool-looking.). I like the picture, taken at the University of Michigan Natural History Museum, in part because the reflection makes it look like my head is in the thing's mouth. :-).
A good introduction to the Devonian is here.