SQL Server 2008 features that work only in Enterprise Edition
One of the new features available in SQL Server 2008 is compressed backup which takes backup of a database with mimimum possible size. The syntax is
backup
database db_name to disk='backup_path'
with init, compression
But this works only in Enterprise Edition of the SQL Server 2008 and not in other editions
If you want to know the new features that only work in Enterprise Edition,refer this
http://msdn.microsoft.com/en-us/library/cc645993.aspx