Thanks to a colleague of mine (Tom) for pointing this out, here is another great series of posts and Excel templates from chandoo.org [4]
Click on the links to access relevant section (directly from their site):
Links:
[1] http://linux.philosweb.com/drupal/category/it/software/software/os/microsoft
[2] http://linux.philosweb.com/drupal/category/it/office
[3] http://linux.philosweb.com/drupal/category/it/project-management
[4] http://chandoo.org
[5] http://chandoo.org/wp/project-management/#gantt-charts
[6] http://chandoo.org/wp/project-management/#project-dashboards
[7] http://chandoo.org/wp/project-management/#project-trackers
[8] http://chandoo.org/wp/project-management/#project-charts
[9] http://chandoo.org/wp/project-management/#formulas-for-pms
[10] http://chandoo.org/wp/project-management/#excel-pm-templates
[11] http://chandoo.org/wp/project-management/#resources-for-pms
[12] http://chandoo.org/wp/project-management/#free-newsletter-for-pms