I created a wiki page on the scipy web site for people to upload tips,
tricks, HOWTOs and recipes for matplotlib. Everyone is encouraged to
contribute; you just need to get a login for the scipy page from
http://www.scipy.org/wikis/topical_software/join_form .
One easy way to contribute is to take a file from the examples
directory and explain and annotate it and place it on the wiki. You
can also upload images to show off your work. Beyond that, everything
is fair game: from a tutorial freezing mpl with py2exe to embedding
mpl in your favorite GUI to doing animations.
To get the ball rolling, I cleaned up my last post to the mailing list
and posted it with a screenshot
http://www.scipy.org/wikis/topical_software/MatplotlibCookbook
Thanks to scipy.org and enthought for hosting!
JDH