Vista Server Core
Scott Swigart describes Vista Server Core, a GUI-less version of Vista. While I quite like the idea (not just for resources, but because a purely command-line driven server facilitates a shift towards scripting repetitive tasks), there is a deep irony that this version of Vista does not support the .NET Framework.
So we beat on, boats against the current, borne back ceaselessly into the past.
Update: Brian Brewder observes that no .NET == no PowerShell, which pretty much destroys the "shift towards scripting" concept.