BusinessWeek even added a quarterly addition to their magazine about
Personally, I find "personae" so uninteresting. I think they are useful,
but they are so unexciting.
To me the real exciting methodologies are around design exploration,
divergent thinking exercises, deep dives, brainstorming, rapid
prototyping, interactive prototyping, etc.
If we are going to talk about this year, AJAX and Flash have made doing
interactive prototypes more important than ever, and last year caused
the call for the death of the "page" and this year called for the death
of the "wireframe".