ASP.NET 1.1 and 2.0 View State
I found this nice article comparing 1.1 and 2.0 view state. It really opens your eyes to the importance of view state that most developers take for granted. The author list a great example that if you check most asp.net websites, the view state is out of control. 2.0 gives us awesome view state control by fist adding control state and using view state the smart way when doing things declaritive [ and we all like copy and pasting code on ASPX pages and things working]. 2.0 also reduces the view state data nearly by half in some cases due to the new encryption methods.
Link: Link to Article