SQL Server and BI has a Home on Channel 9
In an effort to organize the content on Channel 9 we have created a wiki which you can access at http://channel9.msdn.com/sql.
Over the next few months this will be converted to a Tag Center once the Beta version of Channel 9 goes Gold. In the meantime I will be maintaining the wiki by hand.
If there are specific interviews or screencasts that you would like to see related to SQL Server and Business Intelligence just let me know.
Enjoy!
