Try Out Chrome OS Now

Google's fast and light net book operating system, Chrome OS, isn't due out until late fall, but thumb drive owners can jump into an open-source build of the code so far. You can run a custom build of Chrome OS from Hexxeh from your thumb drive and try out Chrome as it stands today. Isn't open source development cool?

Hexxeh, has updated his unofficial ChromiumOS build to automatically update, support more video and Wi-Fi hardware, use webcams, and offer menu customization. All it needs is a 2 GB USB stick.
That's all it needs to boot, but whether it sings or just struggles depends on your hardware. It's also a pretty hefty 327 MB download, straight from a server at the moment, but it might be the last time you'll have to download for a while. Automatic updates, which were being beta tested in a previous update, are now set up by default, so you won't have to re-flash your USB drive when Hexxeh pushes another update.