The OpenCD is a useful tool for getting people to experience open source software. The CD comes with a variety of open source programs from productivity to design which can be run from windows. It also includes a live version of Ubuntu to allow a person to experience a Linux operating system.
If you haven’t tried it out yet, feel free to download the .iso file and burn it to a blank CD. A number of these programs I already had found individually and use – but even I found a few new ones that were very useful. (This blog post was typed on Notepad2, a nice customizable text editor. Also great for script writing.) At the very least, check out the list of software for ideas of what you might find useful.