Hmmm, I did a bit of searching and didn't find anything I particularly liked, I guess I'll add this to the list of posts I need to write. Nevertheless, I did find something. Check out these links:

http://matplotlib.org/users/artists.html

http://matplotlib.org/users/transforms_tutorial.html

http://matplotlib.org/users/path_tutorial.html

http://matplotlib.org/users/event_handling.html