i used to use floats mobile agent with my old sony erricson phone. that sent and recived texts via my computer (bluetooth) its on sorceforge somewhere.. it defenatly tells you when youve got an incoming call but i dont know if it directed the sound and speech through a mic and speakers on the computer... wonder if something like that would bring the pandora nearer to being a cell phone... allbeit needing the cell phone with you in the first place.. but would make texting quicker http://fma.sourceforge.net/ too bad is a dead project for newer phones and windows based :/
Would be great to be able to connect my Pandora to my mobile through BT and use SMS and answering calls without having to get the mobile out of my pocket. Or at least just the SMS part, writing on a proper keyboard is nice.