Seam and Drools both got the nod in InfoWorld's Best of Open Source awards. Apparently the judges did not have a category for application frameworks but they were so determined to reward Seam that they decided to hand us the application server category ;-)
The editors had this to say:
Although many pundits believe that simplification of enterprise Java via the heralded release of EJB 3.0 might lead the way to greater adoption, we think that lightweight, high-functionality frameworks such as JBoss Seam are an even more compelling driver. For this combination of functionality and elegant design, Seam gets our nod for the Bossie.