Here's what a window looks like in Vista when it's Not Responding:

Here's what the window looks like when it is running properly:

Pretty neat effect indicating a broken window, unlike XP's half drawn window. What would be even better, is if it actually drew a crack as if it really IS a broken window!

I noticed with the crashing version of the window is there actually is a menu and window title associated with the window. Why does Vista hide this leaving just empty space in the normal running Explorer?