What's your opinion about "tiger moms"?

Here’s the article. In it, there is a woman named Amy Chau who is a Yale law professor and self-described “tiger mother,” forces her 7-year-old daughter Lulu to practice for hours on end — “right through dinner into the night,” with no breaks for water or even the bathroom, until at last Lulu learned to play the piece.

Oh, and here’s another article from Newsweek.

What do you think about this? Would you ever do it? Do you know any “tiger moms”?