He's been a blur of black fur since we got home. He's insanely happy, and has adjusted incredibly quickly. Due to him running around constantly, I have exactly one clear picture of him.
The only issue we've run into is that he's completely baffled by stairs. They are a mystery to him. He runs up them like they're going to eat his feet, and rather than walk down them, he leaps down as many as he can at once. Given that we live in a three level townhouse with stairs up to the front step, I'm sure he'll figure them out eventually.
Other than that, he's been busy sniffing anything, ignoring the toys we bought, and demanding pettings.