The avatars that REALLY look cool are Deadalready's first two (the violin and the blue-eyes-guy), Terra's 2nd and 4th, Funky's 3rd (eyeball!), blobglob's current, CmdrPage's second two (white-haired-person-with-sword and ninja-guy) and Kyr's 2nd one. Just some positive renforcement.
my first avatar:

My mom has this scandanavian deck of cards. My dad always jokingly gives her crap about those "scandahovian" cards that have a "D" for the Queen, "Kn" for the Jack/Knight and "E" for the Ace. Anyway, the cards are much more detailed than the traditional american cards, and the jack of diamonds clicked with me. One scanner and paintshop session later, an avatar.

my next avatar, credit goes to DuskTejina, who drew up this deck of cards. Interstingly enough, I liked the jack of diamonds in this deck of cards too, so after I got permission I moved the parts of the card around. The borders and J/diamond symbol aren't actually located where they are in my avatar, they were moved around for the objective of having a small avatar.
and a third one I rarely used,

It's a picture of MC Hawking, of www.mchawking.com , a parady that uses Steven Hawking's voice to make rap music. Anyway, I found this mugshot halarious.
and I'm thinking about a third one that I was working on last night.

or

Although some might see the second one as being too revealing, I'd like to point out that it was on a cover of an (american) book. Anyway, it's from the cover of the book "I Will Fear No Evil"- that spawned my sign name. I'm still sorta debating between the two.
And some others that I've used, many of them aren't formatted to 100x100 or 64x64, because I used them for msn messenger, and msn crops it automatically, but doesn't change the picture file.

1

2

3

4

5

6

7
1-An avatar I made recently for myself and as tribute to Phil, the writer of
The Shallow End. If you didn't notice, it's a Jesus fish being fried.
2-A picture of a Mars flag from an antartic expidition of some Mars organization. And since I'm going to Mars, I think it's cool. But the resolution isn't super.
3-An awesome picture of Darth Vader.
4-An avatar that scared the crap out of me on another forum. So
of course I felt the need to save it and use it in msn on my friends.
5-Bun-bun of
Sluggy Freelance, ready to slice someone.
6-A picture of military handcodes, meaning something like "I'm out of 'nades". In a parody of the military handcodes, it meant "woman". Being a victim of somewhat immature humor, I found it funny.
7-The avatar of the entity "Dark Posty". After the original entity, Posty, was banned by an over-zealous admin with no soul or humor, Dark Posty came back. I took Posty's avatar, added the red and purple saying "dark posty" and made the yellow background darker.
oh- I almost forgot.

because I like impersinating ponju members.

edit//wow, the vader picture came out bigger than I expected. Cropping....