Very, very nice!
Not criricism, just some food for thought– do with it what you will…
Text scales nicely on Opera7.5.1 and the latest versions of the Gecko’s. You may, at some point, want to set the fonts inorder to enable text zoom on IE as well.
IE5.0 kind of does a little number on the right viewport side of your layout– usable, but not what you intended. IE5.5 on the other hand looks pretty good.
IE5.2/Mac, I’m sorry to say, destroys your layout– that’s a tough one.
Personally, I think the text zoom problem for IE is relatively important, and easy to implement with CSS. As far as the other stuff is concerned, that could start another war—
Keep up the good work.