Yeah, so VS.NET 2k8 is nearly upon us, but I still manage to find tricks by accident. I guess reading the manual — er, is there a manual? — might have led me to this earlier, but i just came across the Ctrl-Tab menu in Visual Studio 2005.
Not only does it get you to all open files, but to any of the other panes as well. Considering that my primary reason to leave the keyboard and use the mouse is to select another file tab, this is a very welcome find.