In this short video I demonstrate how you can create interactive checklists in Google Documents. One of the neat things that you'll see in the video is that you can adjust the size and style of the checkboxes by using the font menus in Google Docs.
Applications for Education
My first thought when seeing the new checklist option in Google Docs was that it could be great for students to use when planning group projects. The group can have their to-do list and all of the details of their plans on the same document instead of having to use a separate task management tool or having to write/re-write comments when a task is completed.