Handy Sitecore Command: Expand Descendants
Here is another handy command for the Sitecore client.
It's added to the context menu of the Content Editor tree and expands all descendants of the selected item with one click.
Here is the GitHub repository for this module: https://github.com/ParTech/Expand-Descendants-Command
You can download the Sitecore package directly from here: https://github.com/ParTech/Expand-Descendants-Command/raw/master/Release/ParTech.Commands.ExpandDescendants-1.0.0.zip
Use the Sitecore Installation Wizard to install that package. No extra configuration required.
Tested with Sitecore 6.5, 6.6 and 7.0 (all latest revision), but I expect it to work from at least version 6.0.