Editor’s Note: Google has discontinued all gadgets associated with Google Spreadsheets. As of August 5, 2013, all gadgets will be deleted.
If you have a Google Docs account there’s a really cool gadget to help you create neat-looking Gantt Charts which include Task Dependencies and Work Breakdown Structure. The video clip below shows you how to do it.
If you don’t have access to Google Docs, you might be interested in my Excel Spreadsheet Gantt Chart.