I have used Mac in the university labs - it's an iMac, I think.
I hated the UI in the Office 2004 for Mac - and it only have like 4 apps, which are Word, Excel, PowerPoint, and Entourage (Outlook-equivalent). I bet the 2008 upgrade would be the same. Yawn.
Compare that with Office 2003/2007 for Windows .... lol I'd take the Windows version in a nanosecond.
Access, Publisher, Visio, FrontPage/SharePoint Designer, OneNote, and all the rest are needed for IT duties - and yes I do use (or have used) all of them.