Oh wait, it's DisneyWorld's "In the Tiki Tiki Tiki room"... not wiki. Ok, bad humor alert.
Anyway, I discovered an interesting use of a Wiki by Xten to help develop their popular SIP softphone client. If you don't know, a Wiki is a Web-based collaboration system.
It's an interesting story, go check it out:
Then go try out Xten's SIP-based softphone client. They have a free version available.