Jeff the Intern just came up with a great idea, but I coined the term. He and Marcy were both needing to work on two different parts of the same spreadsheet, but Marcy had to close out of it before he could just stick in the two numbers he needed to. He suggested that two people should be able to open the same file and, with two different color cursors, simultaneously add stuff to it. Brilliant! I call it "Microsoft Office 2-Player Mode." :) Now that's collaboration!
Plus, if you click "Up, Up, Down, Down, Left, Right, Left, Right, B, A, Select, Start" before the file opens, you get 30 lives.