Mind Like A Sieve
by Graeme McCormack
Shows your upcoming "Remember The Milk" tasks. "Remember The Milk" is an online task manager.
You can complete or postpone the tasks directly, or open the task in the RTM website - all from the context menu.
The display is quite flexible - you can change the columns shown (context menu on the header bar), change the columns order by dragging, and change the sorting by clicking on the header.