Here's another interesting new feature in ColdFusion MX 6.1...
There may be cases where it would be useful to have one or more methods available to all of the components on your server. Ideas that come to mind are debugging methods, server-wide settings, etc. As of ColdFusion MX 6.1, you can modify a special component called component.cfc that all components on the server automatically extend. Out of the box, the component.cfc file can be found in the \WEB-INF\ cftags directory and is completely empty. Any methods or properties you place in the file are automatically available to every CFC on your server.
CFLib.org
Raymond Camden's Blog
Christian Cantrell's Blog
Sean Corfield's Blog
Nathan Dintenfass' Blog
Todd Rafferty's Blog
Steve Rittler's Blog
Cameron Childress's Blog