The Synthesizer Wiki has an interesting page on Alternative Controllers. It is a bit out of date now, but worth a look.

A new approach to DIY interfaces for music and multimedia performance has been developed by Machinecollective.org who are about to launch a set of modules to allow performers to grab a set of different control objects (sliders, knobs, patch panel etc) and customise the combination the desire. Worth keeping an eye on.

The Audio Cookbook has a set of interesting sound design tutorials and open source resources for music and sound design.

Demystifying Sound Design is also an interesting collection of links and discussion of sound design and synthesis.

audiotuts.com is another source, which although limited at the moment has some free VST synth plugins and some discussion of mic usage and how to make particular styles of music.

Thinking Through The Body — connecting interactive art, design and somatic bodywork is a project on which I am currently working. It is funded by an Australia Council for the Arts, ArtLab grant and is bringing together a range of artists, body workers and arts writers to think through notions of embodiment and engagement in a manner that might inform the making and presentation of interactive art.

An interesting multi-touch contoller developed by Adrian Freed at CNMATTablo, new multitouch controller

BioThreads Video

The above video interview with Sean Montgomery was recorded at the recent Last HOPE conference where Mr. Montgomery exhibited his line of 'Vital Threads' projects.

These wearable devices display realtime biological sensor data as visible (and boldly fashionable) adornment. Included in the collection - the Heart-on Shirt which pulses light in sync with Electrocardiogram readings, the Truth Wristband - displaying galvanic skin response as light/color (literally illuminating the "Truth"), and the Thinking Cap which conveys the wearer's brainwave spectrum via an RGB LED brain shaped dome-hat.

There is likely no more direct way to express the 'inner self' via clothing - Vital Threads