Or if you don't want to leave this thread, why not quote him here
Possibilities:
With EnergyXT, you can take a single track of MIDI, and arpeggiate that feeding it to another arpeggiator which drives a synth while your first arpeggiator gets turned into chords which control a different synth and your original MIDI sequence controls a third synth whilst simultaneously controlling a set of parameters in an effects chain that all the synths are being sent thru...? and it takes about 30 seconds to set that up, and the structure can be saved for re-use within any other project?