Just stumbled across this. I don't think it's been posted here yet, but if it has feel free to lock this thread

Interesting read though, I've never actually read an interview where he disclosed that many details about his techniques. Skip to page 14 for where he talks about what he does to get his signature bass.
Here's most of what he said about his production though:
I use Native Instruments Massive, I use a lot of NI's FM8, actually, and even Operator. I've actually been using the Ableton Operator FM Synth just because Massive is great. Gear it towards a certain sound, whereas you can do so much with very simple sine waves. A lot of my signature monster bass sounds are FM8 and even Operator......
... There are always different strategies for different sounds. But basically, the whole idea is you have some waveform and the whole sonic spectrum is, depending on what frequencies are spiked and what frequencies are there or not there, will cause different formants. I've taken very simple waveforms that aren't wave-table waveforms, like a modern talking oscillator or whatever in that synth, and actually done similar things where I'm actually automating an EQ to actually create different vowels manually. So taking a simple sine wave in Operator, in FM8 and starting with that, you can get some different effects that you might not get in just automating the wave-table on the Massive thing, even though I like that as well.
He makes it sound like it isn't quite as difficult as we make it out to be.