Now, 10 years later, I think I might attempt a similar feat: 20 pounds in 4 weeks - Oct. 10 - Nov. 10. Because Lord Jebus knows my body will go to [censored] once I start playing Skyrim and eating Cheez-Its all hours of the night.
I'm not a big fat guy (only because I'm tall), but I'm still about 30 pounds over my ideal weight, and I can drop it pretty quick if I set my mind to it.
There's just one downside... I'll have to exercise and eat right. Damn it.