Very excited to see another great partners solution for Project Server 2010: Nintex Workflow for Project Server 2010 (press release: http://www.businesswire.com/news/home/20101206005480/en/Nintex-Workflow-Project-Server-2010). In their own words:
Plenty of content on their site: http://www.nintex.com/en-US/Products/Pages/NintexWorkflowForProjectServer2010.aspx
Alex Burton, Project MVP did a great job providing an overview of the tool in this post: First look at Nintex Workflow for Project Server 2010