ASP.NET Page Life Cycle Diagram / cheat sheet
An ASP.NET developer needs to understand the ASP.NET Page Life Cycle and refer to a life cycle reference from time to time. Here is a good reference that comes from an MSDN team member blog. I've used other diagrams before, but this one is recent and comes from an MSDN source:
http://blogs.msdn.com/b/aspnetue/archive/2010/01/14/asp-net-page-life-cycle-diagram.aspx
Here is also an older one that does not come from an official source, but looks reasonably accurate and includes a PDF version for printing:
http://spazzarama.wordpress.com/2009/02/04/aspnet-lifecycle/