Although I do think that the PPS Team hit a home run with the Cascading Filters feature in SharePoint SP1, it would have been a grand slam if it supported list as well as analysis services data sources.
I had a client the other day ask me how to modify the appearance of the Navigation links that PPS will create for you if you have checked off the ‘Include Page list for Navigation’ property in your dashboard.
The Answer is to modify the following element in the PPSDashboard css file:
padding-top: 5px !important;
you will find the PPSDashboard.css file in the following location:
C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\14\TEMPLATE\LAYOUTS\PPSWebParts
checkout the following posts for additional Styling information: