You probably already know that Sony Ericsson can make really good-lookin’ phone UIs. If you still haven’t seen it, check out the interface of the ultra-thin W880i phone. Now, thanks to jampblog we have a 4-minute long clip illustrating the interface of the recently announced W910i Walkman handset. The guy that demos the device goes through themes, camera and of course the new Walkman 3.0 interface. Enjoy!