Unix To Linux: I could hear choruses of "Hallelujiah, Hallelujiah, ..." when I read this article on moving from a Unix mainframe to Linux
Open Source Ascendant - Editorial - CIO: "How Cendant Travel Distribution Services replaced a $100 million mainframe with 144 Linux servers and lived to tell about it."
When companies stop running scared of anything other than that Redmond, Washington software, and actually open-mindedly research all their options, many applications will make much more sense when moved to open source. In fact, their save tons doing it as you can tell from the $299 Linux desktops in a previous article in this Blog.
Those who are open-minded will read this article for new options. Those who aren't probably stopped reading it along time ago.