I'm having trouble crossing that 300lb mark, but I'm officially down 40lbs now. I've lost 12% of my gross body weight so far. That's huge. I'm still huge, but not as huge...
I'm still sticking with Atkins, because it's working. And please note that when I say Atkins I don't mean that I'm eating bacon by the ton. This is more of a vegetables and meats thing. Today I had meatloaf (breadcrumb free), green beans, red leaf lettuce salad from our garden, and water. I'm stuffed, and I feel great.
The one thing that's amused me so far is how great I feel at places like the pool, even though I'm fat, I'm not as ashamed to take off my shirt. From the outside that's got to look funny, right? "Why does that fat man look so happy to take his shirt off?" But when you consider it, and I do, I feel great about losing 40lbs.
My goal is to hit 215lbs, or a total loss of 37%. I don't know if I'll get below 215, but I've given myself two years to find out. One thing, however, I promise I won't subject you to any shirt off before and after pictures.

Congrats man. Keep it up, you can get there.