I'm currently enjoying smiley face and that lili what'sherface song about london town for funky and upbeat. Also, the shrek 2 albulm is great for upbeat tunes, current fav from that is accidently in love by counting crows which I hadn't heard for ages before getting albulm.
Soft and interesting... erm, just brought best of pretenders which has some lovely stuff on, listening to eels last night, also soft but with a twist. Nick Drake is very relaxing. Eva Cassidy also good for soft. Not so good with the soft and interesting stuff... The Nirvanna unplugged albulm is pretty good.