When the iPad is plugged into the keyboard dock, you can reach the home screen by pressing the "square" button in the upper left corner of the dock's keyboard. Is there a keyboard analogue to the double-press that brings up the multitasking bar, or do you have to reach for the physical button?
Home key (at the
Escape key place) will bring the multitasking bar much like the
Home button on your iPad.
Confirmed on my iPad Apple keyboard dock.