Recently, when crafting some HTML macros for Vim, I had a profound idea for a general interface to deal with pairs of parentheses, quotes, HTML tags, and just about anything else. After a few hours work, I had an early version of surround.vim, a Vim plugin which allows one to easily add, remove, and change what I have termed "surroundings." This is perhaps the most useful plugin I have written since rails.vim (which recently had an update, by the way). Examples of use of surround.vim, along with a link to download, are available from vim.org. The development version can also be snagged from my CVS repository.