Last year we released a whitepaper that details how to extract Operations Manager data and view this in PerformancePoint dashboards.
The original solution which can be downloaded here :
The sample code is here : http://download.microsoft.com/download/4/e/2/4e26e51d-e9ef-4dd5-8194-fe95e228335e/new%20IT%20Operations%20Scorecards%20and%20Dashboards%20Sample.zip
contained sample data and scorecards to highlight the possibilities.
Thanks to some help from Ted Tasker at Microsoft we have now made this solution more production ready so it can be used direct against your OpsMgr DW.
Instructions to update the sample solution to the production ready solution are attached.
Courtesy of Daniel Savage - http://blogs.technet.com/momteam/archive/2009/02/04/operations-manager-and-performancepoint-server.asp