The Ubuntu Live CD contains a small collection of open source applications for Windows.
Inserting the Live CD while running Windows brings up a browser with some information about each application and the option to install it. The browser uses technology and content from [http://www.theopencd.org/ TheOpenCD] project, with a custom Ubuntu skin. There is also a brief introduction to Ubuntu with screenshots.
You can download the [http://www.ubuntulinux.org/download/ LiveCD ISO] or[http://shipit.ubuntulinux.org/ order free LiveCDs].
Screenshots
http://maitri.ubuntu.com/theopencd/ubuntu/img/UbuntuWinFOSS_1.png
http://maitri.ubuntu.com/theopencd/ubuntu/img/UbuntuWinFOSS_2.png
http://maitri.ubuntu.com/theopencd/ubuntu/img/UbuntuWinFOSS_3.png