I thought some of you might like the fact that we have ported old and good AnarchyRhythms VST plugin to Mac (64-bit/32-bit) and also released 64-bit version for PC. All versions work in Ableton Live. It's free and yours at http://www.anarchy-rhythms.com.
AnarchyRhythms is a hybrid between an effect and a drum machine. It takes an audio input and applies a user-controlled matrix of amplitude modulation, bandpass filtering, feedback loops, internal oscillation and compression. It allows you to compose rhythmic patterns from the sonic timbre of the input.
Personally, it's my favourite and most used plug-in since 2002. I used it for creating interesting rhythmical melodies and shuffled percussion effects.

Andrejs
http://www.anarchy-rhythms.com
http://soundcloud.com/selffi