What are some good choices for desktop environments and window manager for touchscreens? Currently I am using XFCE with custom GTK settings for making the controls larger, but that is far from optimal.What is the current state of touch-screen desktop environments, and are there any promising projects out there?Edit:Are there any lightweight touch-optimised desktop environments available? 
Window manager and desktop environment for touchscreens
window manager;desktop environment;touch screen
I believe GNOME 3 was designed specifically with touch screens in mind.