Take a picture of yourself right now.
Don't change your clothes. Don't fix your hair. Just take a picture.
Post that picture with no editing.
Post these instructions with your picture.
Lots of people on my friends list seem to be doing this (though bisonfish was the first I saw), but I'd enjoyed a suprisingly large number before it even occurred to me to participate. I guess I normally treat the internets as just another (indeed, my primary) entertainment/distraction vector, so I sometimes forget that LJ is something that I actually do as well...
Contrary to the spirit of the meme (but entirely congruent with my nature), I took 7 or 8 pictures, but then settled on the first one that I took after all.