This is just a simple demo, no database or xml (yet) so no captions or other data, but the function is fun, and easy...
http://www.mredesign.com/demos/zipGallery/index.cfm

Upload a zip file containing some jpg images, give your gallery a unique name (folder with same name will be created on server) and then wait... while the server uploads and unzips the file (with zip.cfc), resizes all of the photos (using Massimo's tmt_img.cfc) and then displays a gallery ready-to-go.

Current skins include Project Seven's Slide Show Magic and Image Gallery Magic, plus the interesting (and easy) FrogJS Gallery and a quick HoverBox CSS Gallery

Go ahead... try it!
If you have any problems / errors, please let me know by leaving a comment on this post.
(or if you don't want to wait, there are some sample galleries on the right side of the upload form)

This was just a quick workbench experiment, to show the upload/unzip/resize routine in action.
Future plans for the 'real' gallery include either an xml or mySQL back end, with captions, titles, categories, etc for a full-blown instant gallery maker.

All comments appreciated.