Makayama, developer of Camera Pro and iSim has released Voice Dial for the iPhone. It allows you to assign tags using your own voice to call any contacts in your addressbook. It can also be used with other iPhone applications like Safari, Maps and Mail by tagging actions associated with those applications. Price is at $27.95. Download using Installer by adding: http://tinyurl.com/2t8cax as a source.

Screenshots from iphoneskinning