So that's how you were getting such high scores in the early levels. How much of a bonus? I was getting points going through the checkpoints anyway, and being able to spend the time not jumping dancing makes me think the bonus for not hitting the checkpoint would be relatively inconsequential.
I just tested it in one of the early levels, and it looks like I got 50,000 bonus points for skipping the checkpoint. I'm not sure if that number changes on the later levels.