You can see the same information I can. The picture on the right, is a dashboard pointing at the weblogs cube. To get to it, just click on the Web Analytics dashboard on the left hand menu of http://RichardLees.com.au/sites/demonstrations. Then click on the Web Performance tab on the top of the dashboard. The scorecard, is asking for the last 6 days on columns and the top 20 http resource types on rows. It will continually adapt to the date and web activity. It doesn't end there, you can click on any resource type (in the picture, I have clicked on .aspx) so that the 3 right hand charts will dynamically filter to this resource type. At a glance I can see which particular resources are most active and their response time trends. From the bottom chart, it would appear that most of the .aspx resources have been progressively slowing down over the last 12 months. This might be due to the increased activity, database size growing, or perhaps my web site is competing for internet bandwidth with my boys web downloads. I'll investigate further.
The point I would like to make, is that once you have useful information in a cube, it is really quite a simple job to create some dynamic and interesting dashboards. If you are heading towards dashboards, I would encourage you to start by very loosely defining what you want on the dashboard. You only need to determine what information your cube requires. Then once, you have the cube, you can be creative with the dashboards to see how to maximise the information you have available. In my experience, what tends to happen is that you will start with a generic dashboard, then, with feedback, make more dynamic functionality so that users are able to easily drill down to the interesting aspects.
There is really only one gotcha that stands out for me and that is the client browser. Internet Explorer 7 and 8, obviously, are very good clients. Other browsers, don't support all PPS dashboard functionality. Of course, if you have a particular browser in question, you could browse to my demonstration and see how well it does. Feel free to post comments on this blog with your results.
By the way, I have similar beliefs about SQL Server Reporting Services. Once you have a cube with all the information, dynamic reporting is quite simple. Also, Reporting Services and PerformancePoint should be seen as complementary, rather than alternatives.