Pic I Wish I'd Taken (PIWIT): This daffodil from Best year of My Life. It's really just a good flower picture, but the idea of putting the photoshopped half together with the unretouched half is very cool.
Other cool photo fun: Camera Mail put a disposable camera in the mail w/instructions for postal workers to use it to take pictures as it wound its way across the country. The results are . . . well, it's a behind-the-scenes look at the postal system, at least.