Over the last few weeks I had several different people ask me what were the differences between SharePoint 2007 Standard and SharePoint 2007 Enterprise and unfortunately I didn't know.  All the clients that I've had in the past all wanted SharePoint 2007 Enterprise because they wanted either Excel Services or BDC so it was never a problem.  I got tired not knowing the answer, so I found this nice document on the Microsoft Office site that explains everything.

 http://office.microsoft.com/en-us/sharepointserver/HA101978031033.aspx

The Excel document compares the Windows SharePoint Services 3.0, SharePoint Portal Server 2003, Office SharePoint Server 2007 for Search, Office Forms Server 2007, Office SharePoint Server 2007 Standard CAL and Office SharePoint Server 2007 Enterprise CAL or for Internet Site products in the categories of Collaboration, Portal, Search, Content Management, Business Process and Forms, Business Intelligence, Management and Platform.