I have yet to find an improvement of Office 2007 over Office 2003, but for those of us used to Office 2003 and earlier, finding things became much more difficult. Here are a couple of tips:

• Trying to resize or move images in the slide master of a PPT 2003 file in PPT 2007? Save it as a 2007 file, and magically Powerpoint will stop making your life miserable in exchange for you having forced every reader of it to perform an expensive upgrade in order to read it.
• Looking for the Insert menu option in Excel? Right click your mouse.