I just came across this group who is attempting to standardize the angel round of investing, dubbed the Seed Stage or Series Seed Financing. Hopefully these will actually catch on one day. http://www.seriesseed.com/
A note from their website about the documents: The Series Seed Documents are a standardized set of documents that can be quickly and easily deployed for a seed investment: to help get a company financed properly, legally quickly and intelligently.