Check out this article that I'm quoted in, "Users Give PerformancePoint a Big Thumbs-Up". I've seen it under two links:
http://www.tdwi.org/News/display.aspx?ID=8799
http://www.esj.com/business_intelligence/article.aspx?EditorialsID=8799
It's a nice piece by Stephen Swoyer about PerformancePoint Server.