Poll: Do you regularly tweak your operating system beyond the standard menu settings?

In a recent TR Dojo video, I demonstrate several tweaks for the Windows Vista logon screen. As a tinkerer at heart, I'm always tweaking with my operating system. What about you?

In my TR Dojo video, "Tweak Windows Vista's Logon screen to meet your needs," I demonstrate several tweaks for the Windows Vista Logon screen—from getting rid of the shutdown button to adding a customized text message. As a tinkerer at heart, I'm always tweaking with my operating system. What about you?