Intervoice has a pretty cool press release out describing some of the voice applications built by students in a class co-taught by one of their employees at Tufts University. While all of the applications in the release sound pretty creative, I was particularly impressed by one called iRing:

This application leverages the students' patent-pending technology enabling users to call into a speech recognition system, select a song from their iTunes music library and send it, as a ring-tone, to their cell phone or to a friend's. Users can simply say the title of the song they would like to download or they can navigate the system using voice commands such as "get favorites" or "search by genre" to narrow down their song choices.

Were this available as a service on my phone, I'd gladly pay a few dollars to be able to get exactly the ringtone I wanted, whenever I wanted it.

It's a pity there isn't a demo line that people can call into to try these applications out.