Here is an interesting tool. Google Docs Story Builder is basically a short story telling tool.
Without any registration you can start creating your story. Go to docsstorybuilder.appspot.com and click on Get Started. Here you can create your characters; Romeo and Juliet, Hansel and Gretel, Earth Wind and Fire, etc. As you continue entering names you can see them on a document which is on the right side of the screen. You can create 10 characters at most. If you want to delete a character, simply double click on the (-) sign which appears when you drag your cursor to the right hand side of a name box. When you are finished click on Write Story.
On the next page, you’ll see the boxes to write your story. Things are getting interesting here. In the first box you write something for a character and in the video it will be seen as if your character is typing it on the document. When you click on the second box, you choose another character and that character can do anything to the previous message. On the right hand side of the page, you’ll see that character’s name. If you have worked with Google Docs before, it is the same process where one person changes another one’s writing. If you accidentally click on a former box you will see a warning message “If you would like to edit this step, all of the steps after must be removed. Would you like to continue?” so if you don’t want to lose your work, be careful. By the way, the maximum number of boxes you can include is limited to 10.
On this screen you can also set the speed of typing and the pause time of character changes. When you click on Add Music, you will be guided to a new page where you can add one of the six soundtracks to your video. If you choose to keep it silent, you can only hear typewriter clicks.
You can give a name to your virtual document by clicking on Title Google Document at the bottom left corner of the page. You can also preview your story and edit characters.