Originally mine was a picture of Ray Charles - a man I admire because of what he achieved despite being blind.
I finally started to get over the trauma of my eye problems back in 2008/2009 and went looking for something different to replace the Ray Charles avatar.
Just FYI, the avatar is still used on my usasma2 profile over at Microsoft Answers.
I wasn't able to find any thing suitable that made a statement - so I settled for this picture I took of a camel while I was sitting on it's back. It was taken on a trip to Giza to see the pyramids back in 2008. I've been using it long enough now that it's become a part of me, so I now carry it to any other forum that I visit.
There's one other avatar that I use (it's a part of my MVP profile) and it's simply a picture of my wife (then my girlfriend) and I from back in 2002.
