One of the most insane things he used to do was because while on tour, he came to the conclusion that the musicians weren't paying enough attention because of the repetition of songs, so he used to have a whole bunch of different signals - like a 3rd-base baseball coach. If he tugged on his left earlobe, it meant for them to play the next section in a different style - like maybe Reggae, or jazz, or whatever. That made all the musicians stay on their toes, and kept the performances more energized. Imagine having to do all that in addition to the crazy (but genius) music itself, both notes and meter.
Amazing.
Oh, I too rely HEAVILY on the Amazing Slow Downer, for slowing things down and keeping the same pitch, and for being able to dynamically set loop points. That allows me to slow down and loop through troublesome parts of songs. I am literally using it now to help prepare for a show tomorrow, where I am playing 34 songs - many of which are with musicians I do not know, nor do I know many of the songs. The Amazing Slow Downer is a FABULASTIC tool for figuring tunes out. I run its output through my HDTV HDMI port and its speakers, and play along with Sonar or some other stand-alone synth using my audio interface ASIO drivers.
Bob Bone