Yeah, the Emerick book is AWESOME. I got the chance to interview Emerick a few weeks back... I'm a journalist and I decided to do a piece on the 40th anniversary of Sgt. Pepper's release (June 1). So I spent about an hour on the phone with the man... he was extremely, extremely pleasant, very little ego, and very willing to share his memories.
He's very nonchalant about doing things like the tape loops on Being For the Benefit of Mr. Kite. He went and got some tapes of steam organs, cut them up, threw them in the air and reassembled them. He said Lennon had already left for the night - leaving the details on how to make it "smell the sawdust" to the technical crew.
Amazing stuff.