TouchOSC drum pad interface on the apple iPad, configured to trigger a Redrum Drum Machine in Propellerhead Record+Reason. Transport and effect mapping make programming and live tweaking a breeze. Interfaced via wifi and translated to MIDI with Osculator: http://www.osculator.net
TouchOSC: 
Propellerhead Record+Reason: http://propellerhead.se
MPC Samples: http://kikbakonline.com
OSC: http://opensoundcontrol.org/
I’m def getting TouchOsc when my Pad arrives. Looks like it will serve many remote purposes. Not sure about using it as a drum trigger just yet. I’m wondering what the latency is like when sequencing. Will let you know when I get my Pad. It will be here this Friday!