Hybrid media and software are permeating all areas of culture and society. This document discusses how software has created a shared ecology where different media can interact and form hybrids. It examines examples of hybrid theatre works that blend performance with film, video, and interactive software in new ways. Works mentioned include Twin Rooms, X (ics) racconti crudeli della giovinezza, Voyage, Glima, Flicker and House of no More, and The Nose. The document argues that software has enabled a "deep remixability" where different artistic techniques can be united in new forms of hybrid digital media and theatre.