One of the excellent new aspects in VS2005 is how much smarter it is than VS2003 in several respects. And in that intelligence, a developer saves a lot of time. Yay, I say, BIG Minutes of coding time shalt be saved!
So let's say I want to rename my form from Form1a to Form1. All project references to the form are updated, plus I get a smart tag asking me if I want to preview the changes.
Screenshots below.