"Yes, the note is real. And yes, the president really wrote it. “It was shot at a pretty good distance,” Wilking tells Gelf. “I had no idea what was on the paper.” Until, that is, the editors at Reuters enlarged it. “I was just as surprised as you,” Wilking says....read on"
I do have to say that Bush does scribble very neatly. Here's the note if you missed it.