bundle_view is now "bundle viz"
Last weekend I tweeted:
My weekend #ruby hacking. GraphViz for your #rails Gemfile using @gembundler. http://bit.ly/b1PaXT Suggestions, patches welcome!What a fun week it's been.
@wycats hunted me down and asked if I'd roll bundle_view into bundler.
Update: Made it into bundler. See the commits here.