Devlex have released some very nice bluetooth connectivity applications for Series 60; PhoneFile accesses your smartphone's memory from a command line prompt; Remote Commander lets you control a Powerpoint presentation; and Remote Tunes gives you a remote control for Apple's iTunes.
Bluetooth Controls For Series 60
Regarding PhoneFile, you get something similar for free. Try QConsole, which is also GNU: http://www.xmailserver.org/qconsole.html