Jackie has a post discussing the move from Access to .NET. As part of it, he focuses on what he thinks are the key features for data-centric developers. Numbers one and two are:
(1) The improved experience and productivity of designing/building data-centric WinForms(2) The improvement in easily building forms that use automatic data binding and actually work correctly
for the rest, check out his entry! I'll be looking in on his site for comments... Thanks for the kudos, Jackie... I'll be sure to pass this along to all the teams that were involved.