I love having lots of screen space. My MacBook Pro has a maximum screen resolution of 1440×900, which, while not great, is better than the 1280×800 maximum on the Vaio which Microsoft sent me.
To get the most out of these screen resolutions on the Mac, I position the Dock on the right hand side and turn Hiding on. I put the Dock on the right (as opposed to the default option of the bottom) because the laptop display is widescreen. As a result, I have more horizontal than vertical space on the screen and most websites require more vertical than horizontal scrolling!
It is possible to mirror this on Vista by sending the Taskbar to the right and turning on hiding, however when you do that, you immediately miss the clock! I don’t wear a watch and therefore always check the time on whatever computer I am on (and I make sure my computer synchs with a timeserver so the time is accurate!).
I miss not having all that information available at a glance, at all times, in Vista.