I'm sure you've probably heard (since I've done nothing but talk about it) that we recently went to San Jose to put on our very own ASP.NET Developer Conference & Expo. While we were there, we talked to a number of developers and got a good feel for what the attendees were most looking forward to in ASP.NET. One of the things that kept coming up was the ability to use code-behind to separate the display and layout of an ASP.NET page from it's code and application logic.
