Came across an article in Infoworld about a new data base product from Aster Data Systems that allows analysis of very large databases. Data is processed on commodity hardware that can be scaled with great ease as the data and processing requirements grow. It is built on a multi-tiered architecture and the tiers can be independently scaled. Another blog posting with some additional technical information.
MySpace is using the database to analyze Weblog data. It has been a while since I read about a cool new DBMS.