In MS Project 2010 you can send the task assignments to a SharePoint task list but there are some drawbacks. If you are trying to get all tasks across multiple projects then you will have to be creative, since out of the box a single project files goes to a single task list in SharePoint. Also there is no dashboard for multiple projects, also another drawback. If however you are only looking to colaborate on task assignments and have individuals update their tasks, this is a perfectly reasonable approach.
