I don't know that I've taken anything this year that can compete with so many of the others, but then I got to thinking and while I don't know if I can say it is my best shot of the year, it is certainly among my favorites, which is why I chose it for my SIG. So I submit this as my sentimental favorite of the year (but not technically my "best" shot).

Title: Point Montara Light, Montara, California, Just Before Sunset
Camera: C-8080WZ
Taken: February 20, 2007