For those of you out there that have not been watching the iPhone Bluetooth development team for the past few months they have really made progress and are approaching the completion of their Bluetooth app for the iPhone. This app is planned to add the missing Bluetooth sigs to the iPhone such as AD2P (high quality Audio), OBEX (file transfer) and perhaps even DUN (dial-up networking). Drop by their site and download a copy of SweetTooth their GUI interface for the first phase of the Bluetooth hack. it is available now for those of you with jailbroken iPhones via Cydia Installer.
Visit their site at: http://ibluetoothproject.com/