If you can't draw, but want to use drawings in your character bio's, this is the thread for you. I have listed several websites where you can have pictures of your characters generated by a program in just a few minutes (for free!). This gives you more flexibility than using other peoples' anime pictures (and you won't be plagarising)
The Heromachine Generates characters in the style of Western comic books. Very versatile, and comes in several different editions.
SP-Studio Generates characters in the style of the cartoon "South Park." Cannot seem to generate tall people for some reason.
Create your Simpsons Avatar Generates characters in the style of the cartoon "The Simpsons." Similar in concept to SP-Studio, but more versatile.
Create My Picture Avatar Generator Generates some really waky-looking faces. Not for serious and dark-toned RP's, but still workable.
Zwinky Best for generating cute, fashion-sensible characters. Very versatile, but you have to download it and it comes with a bunch of other unrelated stuff (don't worry, no viruses).
UNIQUE Generates cuddly chibi characters.
Noble Avatar Appears to generate serious anime-style characters. I haven't tried it because my security software freaked out over it. Download at your own risk.
If you know of any similar programs, please post a link to them here so we can get a comprehensive list.