Maven Dependency Overview
Since I started working with Maven2 I always wanted to have a plug-in that would graph dependency.
For last few days I've been spending part of my free time on maven-overview-plugin.
And here it is in quite usable state.
You can include report with Dependency Overview, you can use it from command line, you can do some basic configuration.
To prove that it is actually useful I wrote short story of it's use: DependencyCleanUpShortStory.
Feel free to use it it is OS Licence.