Have a client that has specific typography requests? Or maybe you have a high attention to detail? Then you need the wp-Typography plugin.
wp-Typography allows you to correctly implement hyphenation in over 50 languages, add widow protection, and force wrapping of long URLs & email addresses.
Plus you get intelligent character replacement for quote marks, dashes, ellipses, trademarks, and copyright symbols.
Even better, the plugin gives you CSS hooks for styling ampersands, uppercase words, numbers, and quotes.
You can do a lot of fancy typography styling with wp-Typography and it works really well.