Props to BBWW for this one - this is well worth sharing.
Waves C1 comp-gate Sidechain Gating
If you've ever wondered how all the creative chopping in most tunes is done, you're about to find out!
Ok, this tutorial depends on what program you're using, but if you're familiar with your music making tools, it will be fairly simple to translate.
First, load two tracks, one with a sample of high hats or drums or whatever it is you want to use to control the gating, the other with the sample you want to have gated.
Pan the hats all the way to the left and the gate-sample all the way to the right.
Now, if you're in Cubase SX, create a group channel and connect both of the two channels to the group channel, then put your Waves C1 comp-gate onto the group channel. If you're using Fruityloops, I believe you can just set it so that both of your samples are connected to the same mixer track.
Now that you've loaded C1 comp-gate, you need to bypass the left side (the compressor) and set the Input Key to L -> R... make sure the attack and release on the Gate side are set very low and turn the Floor down as far as you care to turn it. EQ Mode should be on Wideband.
Next, I recommend playing with the remaining settings until your hats are cutting your sample apart and it sounds like you've suddenly turned into Infected Mushroom! (Hint: GateOpen and GateClose ought to be at the same level, from what I discovered)