Ok, fairly straightforward one here.
Using Crystal for a Window Decoration (installed with KDE by default, at least in Kubuntu). Options for Crystal: Title Alignment Centered, Use Shadowed Text, Round Corners, Vista Buttons, Background Enable Transparency, Solarization for the User Defined Background.
The Background is called Matrix Aqua, found on Google Images Search.
Semi Transparent KDE Panel, Icons are randomly pulled from here on KDE-Look.org.
Terminal is Yakuake Terminal, using Konsole Transparency options.