OpenSolaris Indiana is a project that's creating a binary distribution based on OpenSolaris source code that's both easy to install and use. It's worth checking out. I'm currently installing it within Parallels Desktop on my MacBook, and will also be playing with it some more when I get the free time to do so. Developer Preview 2 was released this week. A Live-CD distro similar to Ubuntu Desktop Edition is available. You can use it from the Live-CD or install it on a hard drive once the interface is up and running.