I have got one called Super Bluetooth Hack and you can get it here .... (Mobiles24)... http://www.mobiles24.com/downloads/s/44831-111-super_bluetooth_hack_v108_bt_info

You can change ringtones, turn off there phone, restart there phones, start games on there phone, make them call people, make them text people, change the language on the phone, you can even turn off there transmitter so they cannot receive phone calls or text messages until you turn it on again.

Its really cool but you need to make an account on Mobiles24 before you can download it.

If you don't want to make an account email me and i will email it to you. =] Get them back =]