I'm a vivid Ableton Live (Suite) user who tries to specialize himself in sound design and engineering. Which is also where Max for Live comes into the picture: it is truly the glue which more or less ties all my gear (Live / Reason) together.
When it comes to Max for Live I try to specialize myself in creating tools and utilities which can help us to get more out of the Live environment.
Some of my most notable work was my APC40 "hacking project": trying to get the APC to do more than merely being a dedicated Live MIDI controller. In the mean time I replaced the APC40 with the Push and there's more hacking to be done there ;)