How much to tip, whom, and when?

I love Japan because there is no tipping involved. Of course, prices are high for everything but I like the idea that I do not have to deal with figuring out all the complexities of tipping. You can tip too much and spoil the recipient. You can end up tipping too little and make the recipient unhappy. Fortunately, Peter Post of the Emily Post Institute has all the answers about tipping during the holiday season in this insightful video.