Some of the features I totally loved about Office 2010:
– It’s amazingly fast! It loads up faster than my old Office 2007 on the same machine
– The “view before commit” feature which lets you view the preview of applying an action before actually committing it
– Comes with a built-in PDF writer so I don’t have to install external apps to create PDFs anymore.
– More features to come as I use it more.
Overall, I think it is quite a leap in terms of improvements from Office 2007.