I did a radio show last month with SharePoint Product Manager Bill Baer which went live yesterday. We talked about how BCS throtlling is different from large list throttling and what things one should be careful about. You can get the podcast at below given link. Hope you enjoy the show.

http://technet.microsoft.com/en-us/edge/technet-radio-throttling-limits-and-business-connectivity-services-in-sharepoint-2010.aspx