If you're working in a locked-down environment and unable to use Revo Uninstaller or a similar wipe-it-clean uninstaller, you can still get more from Windows' default "Uninstall a Program" tool by improving its sorting and data reporting.
The Ghacks tech blog details the information that Uninstall a Program can show the user about all the applications installed on a system, including how much room they're taking up, where they're located, when they were installed and last used, and, if provided by the software, help and contact links. Using that sorting, it's easier to see what apps aren't really worth the disk space and system clutter.
How do you bring in this previously hidden information? Right click on one of the column heading buttons in the Uninstall dialog, like "Name", and select the "More" option to bring up a list of optional software information columns to include in the tool.