At MIT's Media Lab, Professor Joe Paradiso's Responsive Environments group explores how sensor networks augment and mediate human experience, interaction, and perception, while developing new sensing modalities and enabling technologies that create new forms of interactive experience and expression. This work is highlighted in diverse application areas, which have included automotive systems, smart highways, medical instrumentation, RFID, wearable computing, and interactive media. In this talk, we will provide an overview of that work and thoughts on future directions.