I liked having all of them as my user icon, but I think that I slightly favor this one over all of the others. I like the dark and mysterious aura that is depicted in this fan art of Zexion. If you do not know what the icons are, I will tell you:

1 - A doll, from the anime series, "Another"
2 - Lelouch vi Britannia from the anime series, "Code Geass: Lelouch of the Rebellion"
3 - 'S', my first initial, in the Old English font
4 - Lucy's eye, from the anime series, "Elfen Lied"
5 - Mello, from the anime series, "Death Note"
6 - Aono Morimiya, from the anime series, "Sola"
7 - L, from the anime series, "Death Note"
8 - Zexion, from the video game franchise, "Kingdom Hearts"
9 - Lucy, from the anime series, "Elfen Lied"

4 & 9 are also cool, but Another is the shiz.