Samui is a ShapeShifter theme that has a sleek, streamlined grey look with blue window highlights. It includes a number of application skins including QuickTime, Vienna, iTunes, iChat, iCal, Mail.app, Safari and VLC Controller.
This theme seriously kicks ass. The buttons and other widgets (namely scroll bars) are beautiful! " la iTunes 7", imho. To be honest, I wished there were more variants. Such as more original colors; I'm not a huge fan of the dark pastel used for Mail an Vienna (the bullets & icons are super sweet though).
P.S. The theme doesn't seem to get applied to VLC version 0.8.6b.