I've only begun super/intra-setting or whatever it might be called, but am already happy with it.
My modest beginning is to do planks between sets of curls, and on another day planks between sets of lunges. Just seems a good way to pass the time. Right now I'm working up how to get in more pulling for my next cycle, which will almost certainly get supersetted with some small muscle exercise. Great way to keep the time moving and get more done.
I'm currently afraid to put anything in during rest on the main lifts, being horribly paranoid about upsetting the rest, but I'm sure I'll eventually get over it.