Set up a parametric eq and bitcrusher like so: http://imgur.com/4ou6K.png
It helps to have that compressor as it can get quite loud.
Play any note on your synth and you're off! Tweak the frequency of the eq and the depth of the bc to alter the sound, and turn up jitter to make computery sound effects. Turn jitter down and play with the low end of the rate knob to find deep, loud bass tones.