Fad Diets?

So I've been reading a lot about these 'fad' diet plans which supposedly help you lose about 10 lbs in a week.

One was something about Raspberry Ketones or something.... another where you make this ONE giant batch of soup and eat as much as you want of it for 7 days and on the first day you eat ALLLL fruits. Second day alllll vegetable... etc.

And I have to say... I sincerely contemplated it for a moment or two. Then I realized that though the soup diet may work, as soon as I start to eat normal food again my body is going to regain most of that weight back.... and quickly.

Now, growing up as a fat kid I tried SO many diets over the years, starting when I was 12. I did Slim Fast. I did Weight Watchers. I was prescribed phen-phen by my doctor. I did everything. Nothing worked except the phen phen which they promptly pulled from the market cause apparently people were keeling over from heart attacks. Big deal. :P

So.. what fad diets have you heard of and tried (or been scared to)?