During the last five days I added fifteen examples to the gallery. Some were sent by email (thank you!), some are from the TeX.SE and TeXwelt.de sites, question and answer sites with creative commons license. I bookmarked nice examples I noticed, and from time to time I’m adding such drawings here, with backlink to the original post. Now the gallery shows 371 drawings.
You may have seen...
TeXample.net is a web site dedicated to the wonderful world of TeX and friends.
On PGFplots.net you can find a PGFplots example gallery.