This was 2 or 3 months ago but it still looks the same lol. It’s Ubuntu 8.10 using the ‘SlicknesS’ theme and ‘Hydrogen’ icon set. The dock is Avant Window Navigator and the widgets are Screenlets, both of which are in GNOME running Compiz.

all very nice, i was looking for a mac os x like dock for xfce, anyone know of one?

Not very cool, but I like it :)