Missing Vista feature #2 - reboots

I've just run a Windows Update on Vista and it found a new driver for my graphics card. I'm warned that I might need to reboot - no surprise there. Off it goes, downloading in the background. Several minutes later, the screen flickers, goes black and pops back to life. New driver, fully installed, no reboots. That's just plain showing off.

PS. If you're interested, #1 missing feature was the notification API.