Legion
Crowdsourcing has been shown to be effective at solving problems that are beyond the capabilities of current automated approaches.
Chorus
Automated systems are not yet able to engage in a robust dialogue with users due to the complexity and ambiguity of natural language. However, humans can easily converse with one another and maintain a shared history of past interactions.
VizWiz
VizWiz is an iPhone application aimed at enabling blind people to recruit remote sighted workers to help them with visual problems in nearly real-time.