Inkscape versus Ilustrator: Bitmap Tracing
I had to vectorize a small logo. In the logo was the picture of eagle. After trying to use Illustrator CS3 to get a good vector representation of the bitmap image without much luck; I decided to download Inkscape and use that to trace the image.
Wow, super easy. Not to mention open source (ie free).
You can find Inkscape here: http://www.inkscape.org/