If you’d like to have your Outlook info from the To-Do Bar always available to you now you can. If you’re using the SideBar in Vista, that is. There is now two SideBar Gadgets available: Outlook Appointments and Outlook Tasks.
The appointment gadget shows you up to 5 of your future appointments. The task gadget shows you your tasks and is scrollable and has some customization available. You can also add a new task to the list. You can check out more info here and download the gadgets from the Windows Live Gadget Gallery.
Of course the real question for many mobile users is if they have turned off the Sidebar or not. I know many who have.