UNetbootin is a cool bit of freeware which lets you create a live bootable Linux system on a standard USB memory stick. It’s Windows only, but a very cool way to try out a Linux distro on your machine without having to laboriously install the thing.
You’ll need to download an .ISO file first, but there’s lots available on the site for you to play with. A fun way to see just how fast your machine can be with a non-bloat operating system running on it.
UNetbootin allows you to create bootable Live USB drives for Ubuntu, Fedora, and other Linux distributions without burning a CD. It runs on Windows, Linux, and Mac OS X. You can either let UNetbootin download one of the many distributions supported out-of-the-box for you, or supply your own Linux .iso file if you’ve already downloaded one or your preferred distribution isn’t on the list.