Mondo Dock is a Dashboard widget for accessing your common applications and documents via the Dashboard. Just drag from the Finder, bring up Dashboard, and drop onto it to add it. You can even launch documents by dropping them on apps - just like the Dock.
Version 1.2 with indication of running apps, easier adding of icons (just drop between where you want them), and support for copying into folders/disk when dropping.
Mac OS X 10.4 or later
*Previously available here