qahawthorne selected six of mine for exposition.
I'm going to swap the order of two and three so it's easier to answer.
These first two icons are my two "theatrical role" icons. I created the padre icon when I was cast as the Padre in Man of La Mancha (my audition for the role), then I created the horse icon when I was cast as Harry the Horse in Guys and Dolls.
1 is the loneliest number. 2 can be as bad as 1 -- it's the loneliest number since the number 1.
I'd just moved (back) to New York City, and I needed an icon to express my New York-ification. The 1 line on the subway was the line that went to my school when I was in college, so I've always felt an affinity for the 1. sigh Sometimes, I miss those days. I've since added another NYC icon.
My favorite muppet of all time. If I am any muppet, it's the Cookie Monster. Ahm, NOM NOM NOM!!!
I even have the Cookie Monster "got milk?" poster framed and hanging in my kitchen (which, according to the intarwebs, is now worth a bit more than the postage I paid to get it free from the Dairy Board back in 1998).
Do you use this one much? I don't remember it but it is funny!
No, I don't use this one enough. I saw it someplace on LJ and tracked down and credited the creator (probably because the person I saw using it credited the creator as well). I was just feeling like I didn't have enough mathematics icons.
I'm still a little disappointed in myself that I didn't stick it out, do the required coursework, then sue Russell Sage College to allow me to graduate with a dual BA/BS in Math/Computer Science, like one of their (then and now) current Math faculty did when she was an undergrad. But they'd been giving me the runaround saying the evening college didn't offer the program I wanted, and I couldn't matriculate as a math major, because that degree was only offered through the women's college. It didn't matter that I was well on my way to completing the requirements already, and that regardless of which "school" I was matriculated with my degree was still going to read "Russell Sage College"... but I finally got tired of fighting them, and with another three years of work to get the degree I really wanted, I broke down, re-matriculated under a newer version of the BS in Computer Science and was out within a year.
Saved the best for last, aw, K-9!
K-9 has always been my favorite character in the Doctor Who universe.
A friend of mine was putting together people to play a Doctor Who roleplaying game he was working up (I'd had a lot of fun playing in the Chronicles of Amber RPG he'd recently run). I told him I'd play as long as he allowed me to play a K-9 unit. He loved the idea. We never got to play, and that's one gaming opportunity I sorely miss.