Office "Fluent" UI for IT Pros?

As an IT Pro, what is your opinion of the Office 2007 new ribbon UI, called "Fluent"? Is it helping or hindering your user's productivity? Do you want to see more of it? Leave feedback and I will channel to the teams involved.

A recent Infoworld article says:

In a presentation at the Microsoft's 2008 Office System Developer Conference in San Jose, Calif. last month, Microsoft Chairman Bill Gates characterized the Office Fluent UI as a success and said the company would be adding its capabilities to other systems. "We usability-tested it massively and, fortunately, it has had a very strong positive reaction," Gates said.