If you point a camera at someone, in the end they'll notice.
Oh, and if you're interested, the original image is here (which I've put up, because as you'll see, the editing is reasonably extensive with this one):
Update: Following some of the comments (particularly Owen's) I've taken the opportunity to rework this image a little by i) removing the halo from around his face (this was, as Owen notes, an error), and ii) have darkened him down a little. I've also run the image through Noise Ninja but this isn't especially noticeable at this resolution. Anyway, if you'd like to see the image prior to these reworkings, it's here:
2.06pm on 17/1/06|
EF 70-200 f/4L USM
200mm (320mm equiv.)