I used Office 2007 for a full semester and still never adapted to it. Every time I needed to make a special chart, graph, or anything of that sort, or try to use more advanced features, it was always a hunt through the big pretty buttons and then the help menu to figure out where the hell everything had gone, or what it was now called.
Using the drawing features sucks, too. They split up most of the basic features of lines into two separate windows. Changing the color was in one window, but changing the line length and angle was in another. Why move them around? Why not keep them in the same window like they were in previous versions?
And the new equation editor, dear god it's awful. The fun part: Excel 2007 doesn't use the new editor, it uses the v3.0 equation editor. Who knows why they decided to do that.
Throughout my engineering classes, the vast majority of people shared my sentiments, that Office 2007 is a major pain in the ass to try to use.
I found myself putting off some projects so I could do them at home, on Office 2000, in which I could do exactly what I needed to do. Office 2007 is like trying to work while wearing bright, colorful mittens. Yeah, pretty and shiny and all, but nearly useless.