It looks like LXDE-desktop is coming up fast.
I first bumped into LXDE a year or two back when it was used in gOS where it made some lasting impressions on me.
Now it looks like there is going to be an Ubuntu flavor with LXDE - Lubuntu. The Eeebuntu -distribution has a LXDE-Eeebuntu in beta 2 at the moment. Aside from those there is U-lite, and naturally you can install LXDE in dozens of other distros aswell.
LXDE includes:
Openbox - Lightweight, standard-compliant, and highly-configurable window manager.
PCManFM - file manager, tabbed, desktop icons
LXPanel - desktop panel, menu, quick launch icons, systray, clock, graphical conf.
LXSession - Standard-compliant X11 session manager
LXAppearance - GTK+ theme switcher for themes, icon themes, and fonts.
LXLauncher - topic oriented desktops (?)
GPicView - lightweight image viewer featuring immediate startup.
Leafpad -text editor, tiny!
LXDE Common - default configuration files.
LXTerminal - VTE-based terminal emulator
XArchiver - file archiver
LXRandR - display conf tool.
LXNM - network connection manager.
LXMusic - music player.
GtkNetCat - netcat gui.