On Monday the PnP team released the 2nd drop of the SharePoint 2010 Guidance. Included is an example of a sandboxed solution, which is a good list aggregation scenario related to SOW’s (statements of work) and estimates across a number of sub-sites. I am VERY excited about the work that is being done and guidance documentation and code that will be released soon. You will also begin to see tests utilizing Moles for “detouring” or “mocking” as well as examples of tests using several different unit testing different frameworks including Pex. For more details refer to http://research.microsoft.com/en-us/projects/pex/pexsharepoint.pdf. There are now other options than just TypeMock.