I did kitchen sink for the first time at the weekend as it was on the plan.
It was pretty painful, not mentally as taxing as first feared being sat for 3 hours on the turbo due to the flicking between different videos to keep it interesting.
However these bits from each video are pretty evil, GVA picked all of the best/worse bits from each one! Managed to get through the video, it was tough at times but I could not manage to do the downward spiral sections at the end for 3 of the longer ones at the start I could only do about half the interval as i was suffering!
Anyone else found this? Having done the knighthood recently I would say that this video is almost as bad just condensed into 3 hours!