I just noticed that iTunes 9 (9.0.1) does not work with Aero Peak which is one of the cool new features in Windows 7 that allows you to easily see your desktop without having to minimise all your windows.
This is a screenshot of my computer with iTunes, Internet Explorer and Calculator running.
And here is the same shot now in Aero Peak mode… where did iTunes go????
This is quite surprising as iTunes 9 has actually been written to take advantage of some Windows 7 features such as Jump Lists and Mini Control’s.
iTunes Jump list
iTunes Mini Controls