*** FOR Experienced Users ONLY ***
I like Hardy now, its very...ummm...Hardy.
But I get bored occasionally. Today I decided to check out e17 Enlightenment's current state. Rather than download elive, I thought there must be a way to add e17 into my currently functional system, thereby reducing the effort to setup the whole lot again. There is.

First:
in terminal:
sudo apt-get install build-essential automake cvs libimlib2-dev libxrender-dev flex libxine-dev bison gettext libxml-dev libxslt1-dev libdbus-1-dev libbz2-dev libsqlite3-dev libcurl4-gnutls-dev libtagc0-dev libmpd-dev libtheora-dev libxkbfile-dev subversion libtool
libxcomposite-dev libxdamage-dev

This installs all of the necessaries to get e17 installed from SVN ( the latest code).

Then go and get this script: http://omicron.homeip.net/projects/#easy_e17.sh
save the script to your Home directory. Then:
chmod +x ~/easy_e17.sh
sudo ~/easy_e17.sh -i
Pay attention to any compilation errors, as you may be missing some libraries (-dev) for success. I hope I got them all above, but my Hardy was not a pristine install, so its hard to tell.
then do:
touch ~/.xsession
echo "exec /opt/e17/bin/enlightenment_start" >> ~/.xsession
ln -s ~/.xsession ~/.xinitrc

then Logoff.
If you're using a login manager (GDM/KDM), select the session type 'XClient scripts' in them. It should start e17 for you.

To update at anytime, run sudo ~/easy_e17.sh -u

The reason why it's experienced users only? It's still not idiot-proof. I munged it up in the first couple of hours, playing with settings to do with composite rendering, i ended up with a blank screen bar the cursor. To fix this I removed the ~/.e directory, and set the DE up carefully ;-)

User guide.

My impressions? Very nice. It's a different paradigm. It's highly configurable in a lot of areas, and frustratingly not in others. The file manager is extremely basic, and really needs to be replaced with something more capable for the Power Users this is aimed at.My machine kept stuttering when rendering the constant moving animations, eg the Penguins who traverse your desktop, yet it is a Phenom 8450, 4GB, with nVidia 8500GT. Not sure why yet. Compiz effects won't happen because they cannot with the e17 window manager.
Gnome desktop applications and shortcuts need to be recreated, but those already in the main menu were brought across. I came across a bug in the file manager, that meant that drag and drop of modules onto its window made it crash every time. Maybe you aren't supposed to do this? I thought it would be handy to have the mixer applet in my file manager toolbar. Skype doesn't like the environment for some reason, and refused to render it's windows properly half the time, then crashed itself out. There doesn't seem to be a "system tray", that I can find anyhow, so running applications like Pidgin or Skype, that minimize to that zone just disappear without trace. Odd. (Ok this link says that stalonetray will work. I tested it and it does.) The environment on the whole is fun, because it's different. I've got to work with it for some time yet to see if can be used productively.