I saw this as the #1 requested item. I was wondering if there is a timeframe of when it might be added? It is definetely the biggest addition I could think of, as its kind of a pain to have to jump collaborators all the time. Thanks!
Unfortunately, this is not possible all on one page.
What you can do is go to the sharing view. Then click "Collaborators" and switch to the person you want to view. Then click on the tab with your name on it. This will show all the tasks that you have assigned to this person.