Random Cool Emacs Hack

If you spend a lot of time in Emacs, you'll invariably end up with
multiple buffers of the same name hanging around. It's sometimes
irritating to discern between them while switching. Check out the
very useful elisp function that will kill all other Emacs buffers of
the same name, courtesy of Trey Jackson at "Life Is Too Short For
Bad Code" [0].

[0] http://trey-jackson.blogspot.com/2009/06/emacs-tip-31-kill-other-buffers-of-this.html