Right before I got pregnant I tried the hCG diet! I ended up getting pregnant while on the diet, so I had to stop early-on. but I was on track for losing weight with the advertised results! They said I would lose nearly a lb a day, and I lost 7 lbs for the 7 days I was on it.
I might actually try it again after I am done breastfeeding if I haven't lost the weight yet.
http://applevalleywellness.com/custom_content/c_174823_hcg_faq.html

Have you done any crazy diets?