I watch movies or videos and surf the web.
I often have a document open and also have the calculator open to make a calculation from the first document.
A nifty feature of the surface is from the email app if I open up a web link it opens on the right side of the screen but still keeps the email list on the right. When you close the window it goes back to a full screen view of the email program. No more switching away to a web browser, then having to close down the browser and switching back to the email.
I often use Appshopper on my iPad. Just imagine if you could go to the Apple store in half of the screen(Landscape mode) and buy the app or look at reviews then continue where you left off in the other window looking at more apps in appshopper.
Hope that makes sense. You don't know what your missing until you have the option.
Thats why I say I would like a iPad/Surface device.
The Battery life, 4:3 screen size, weight, game/Utility Apps of the iPad.
The Surface key board/scroll pad, blue tooth for mouse support, multi window OS, Network file manager and kick stand.
I hate carrying two devices I want one that will do it all. Then again I also carry a phone so if the device did it all then that would be OK too