I just installed Joli OS 1.2 on my Asus eeePC 900. I had a little trouble booting from the external CD and then later getting it to recognize the onboard SD card reader, but a couple of system BIOS tweaks opened everything up. I'm still feeling my way around the file system. Seems like hardware settings are hard to find. Maybe that's just as well once things are up and running.
The OS came pre-loaded with a lot of goofy apps; I kept about a third and downloaded a couple others.
There's occasionally some lag time on screen refreshes, so it seems like it's slow, but I think it's keeping itself busy in the background, you know, it's not just sitting there frozen.
Joli advertises this OS as a way to breathe new life into old computers. The whole setup seems more cloud-centric than local storage-oriented, but I think it's kind of dumb to keep a lot of data on your machine anyway. (I like hard drives as opposed to the cloud for privacy reasons. Guess I'm old-fashioned.) There's a whole section devoted to social stuff - app sharing and tweets and product-rating stuff, but I'm not too interested in those kinds of things. Present company excluded, narf.