Thinking about doing Insanity. Anyone tried it? Opinions?

I've angered my father and he won't pay my gym membership (It's $23 a month, but I'm broke lol) . Luckily, a friend has agreed to lend me his Insanity DVD copy. Before I dedicate myself to this 60 day program, I wanted to know if it does put out good results. So opinions on Insanity anyone, the good and bad?
Thinking about doing Insanity. Anyone tried it? Opinions?
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