I love asymmetry, so centering things has always been hard for me. Even if my design sense tends toward grouping display items in odd numbers. I did manage to find a few things around the office that were centered though, at least if you looked at them from the right angle.
I still think that these photos don’t look right, but maybe that’s just because I’m used to my asymmetrical images.
There. Now I feel a little bit better.