I seem to do this about every second year, so decided to use one of the pictures from my recent trip to the UK (for study at Lancaster University) and Ireland (for holiday). As I was selecting pictures, I realized the irony that this picture was taken about 500 feet away from the location where the last picture I used as my avatar for the past two years, was taken, namely at Glendalough.
So, while my hair is much shorter now, other things can remain the same.
Goodness, now comes the process of having to send the new avatar all over the place. Wish everyone would use Gravatar for this purpose!