I agree 2011 Word is a great improvement. My only concern were compatibility issues of 08 to 11. Overall, it was well worth the $60 and since I have a SSD which is limited space, I guess I will delete it given I have the install disk for 2008 and a carbon copy of it on an external.
GGJ,
The user interface is substantially better IMO as it allows quicker navigation, easier use of features, a better 'help' system, and more customization to how you want it. I'd check it out if you use Word a lot as it really impressed me. I was going to keep 08 until the post 11 update, but I was so impressed I bought 11. I've also been told by users that it has features and capabilities that the Windows version of Office either does not support or impossible to locate or understand.