Highlight the matching parentheses surrounding point.
highlight-parentheses requires Emacs 22.
(add-to-list 'load-path "/path/to/highlight-parentheses") (require 'highlight-parentheses)
Just enable highlight-parentheses-mode.
Also available via ELPA.
If you have any feedback, please email me, or visit this package's page at the Emacs wiki.