Not yet televised, however- Team Macromedia member Aziz Peregrino-Brimah has put a quick page demo of a centered background that spans the full height of the browser window- but also uses a full doctype and validates as XHTML-strict. He gives credit to a page design seen on Blogger's site- but regardless of the source, it's definitely a CSS layout tip to have at your disposal.
I don't see anything new there, I think I did that long back with http://indiammug.com/css/indiammugScreen.css
And the site is at http://indiammug.com/
the site validates as xhtml1.0 transitional (well, may be not anymore where we use MTCodeBeautifier and the authors are many that I cannot control) and valid css
Sure- this may not be new to you, but if you got asked how to layout backgrounds like this (that also validate as XHTML/Strict) as much as I do, you'd probably have 'blogged it too... ;)
Thanks for the additional link!