We've now adopted umbraco for many of our client websites, having been impressed by the ease of use, extensibility and the fantastic community.
From the community, we've benefited from the work of others and have decided as a company that we should pass our knowledge & experience back into the community as we create components that could be reused.
With that in mind, we've created (mostly developer-centric) packages for embedding flash and flv video players, and for changing the mime type/content disposition of a page.
Now we're releasing a simple gallery plugin for use by end users. You can see a demo of this plugin at this address, and can download the package itself from http://our.umbraco.org/projects/jqgallery.
Any bug reports etc should go in the forums at the our.umbraco site, but feel free to post any questions or feedback in the comments to this page.
Demo | Download