A couple minutes of live footage, along with an interview where he shows off some records and talks about the importance of listening to lots and lots of music.
He looks a little disoriented in the interview, but you get to see him speak in a very spontaneous way. He has to work to condense everything into words that make sense, and even then it's a bit of a ramble. Still, the ideas don't sound dated.
Compare to this recent TV interview, where he's a lot more composed. I think he mostly does interviews over email these days, with interesting (if really long-winded) results. Squarepusher's official site has a collection of print interviews that he did for the release of Hello Everything; they're all worth reading, the one with XLR8R is a good place to start though.