Kresch, one of the groups I perform in, with David Murray-Rust, works from an improvisatory stance. How this has worked so far has been an evolving experiment in interactivity and intersubjectivity. Dave has fed me sounds, in the moment, and I have worked with the material presented, not knowing what I had been given, both of us in mutual exploration going forward.
Another of the groups I perform with, The Dyad (Chris Ross - Kit, Ben Schögler - Bass), has used motion tracking technology with a nod to interactivity.
I also work with dance and film, improvising and composing in collaboration with various people. This clip, Test Dancer, is a collaboration with Emma Dunn - Dancer, and Nick Gibbon - Filmmaker, looking at dance improvisation, from the dancer's perspective.
As my primary instrument is the piano, I hope to be able to improvise with people, either with keyboard or acoustic piano, prepared or not. Working with visuals, and maybe even live coding would be amazingly fun things to do also.