Posted a short script to
http://paste.pocoo.org/show/402065/Output PNG files using Pygments for the python code in a directory (used it for short snippets used in a presentation) :)
(edit: Thanks to Marius for suggesting a sample.)
Sample has one function highlighted (any line you want highlighted put ## at the end of the line).
Currently the script has very few options - just what I needed RIGHT NOW :)