I've been cursed since birth with a commonly misspelled name: Zach. Or is it Zack, or maybe Zac, or just Zak (this is of course, ignoring the more proper Zachary, Zackary, Zackery, Zachery, Zacharia, etc.)? With SharePoint 2007, this meant a lot of people had trouble finding me when using the product's People Search functionality.
SharePoint 2010 introduces a more robust, phonetic search. Now people can find me (and other people with commonly misspelled names like mine) more easily, so long as the name you're searching for sounds correct.