Hybrid Manual/Automation Tests

I've had this idea before. Suppose you have a set of tests that are difficult to automate because some middle step needs either human interaction or would benefit from a human performing the validation.

Well, Amazon's Mechanical Turk is one option. Another option was just announced as well. With these tools, you can add in a human task to your automation tests to make your Manual / Automation hybrid tests.

So... Any tool authors out there that want to make this available?