The Twilio Java Helper Library allows users to issue calls to the Twilio API in Java code. This library covers every action available through Twilio, and quickstart tutorials are provided to help developers get going.
Most mashups try to solve a complex problem in an innovative way, and therefore save us all time. However, sometimes a mashup solves a very simple problem in an interesting way. Either way, I love to see innovative new uses of APIs like this one from Brian Beermann, which controls his garage door using the Twilio SMS API, some hardware and a lot of creativity.