Just a short and fun post:
This site will allow you to create your very own South Park, Lego or Sonic character.
You can then use your character as an avatar in your messaging software, or include it in your blog, forum etc. Here's what I managed to come up with in 3 minutes (and remember: my artistic sense is close to NULL, as I have demonstrated many times before ):
And a lot of thanks to Ariel for pointing me to this site. You should see his avatar .