Not EAV, but I'd be interested in people's views on Anchor Modelling (www.anchormodeling.com) which basically normalises out every column except the primary key, but provides decent generated code for accessing as it still in 3NF.

For an application we have that needs every change to any column to be recorded, it looks attractive from a storage-space perspective and maintainability for schema changes (also a requirement in this case), but I'm a bit concerned about performance for a live transactional system (rather than a data warehouse).