Office365 REST APIs overview for developers

If you only have 20 minutes and you want to have an overview of SharePoint online and O365 REST APIs, please check these: http://channel9.msdn.com/Shows/Azure-Friday/Azure-Office-365-and-SharePoint-Online-has-REST-endpoints-with-Mat-Velloso http://channel9.msdn.com/Shows/Azure-Friday/Assembling-Azure-Office-365-and-Web-Services-into-a-real-app