Hey, I just finished checking out the rest of that site. It has some pretty cool calculators. The one rep max calculator was pretty accurate (although it tested about 5 lbs below what I can actually do). The daily calorie expenditure calculator was also close to what I figured it should be.
My favourite test was the life expectency one. It said I had the health of a 9 year old, and that I would live to be 90. I guess thats good news, LOL.