It hasn't happened often, but it did happen within the last few months. And I had to pick one of the answers, as they both applied!
I was driving to work, and also very close to getting a 500 mile tank. And I knew the tank was low. So I was trying to push the car a bit, that got me into trouble. Which is why I picked the first answer on the poll.
However, the other answer also applies, as I really didn't know how low my fuel tank was. Not only was the gas gauge a little misleading toward the lower end (now that I've run out of gas once in that car, I now know how to read it), but my estimates based upon the trip odometer were also off (because I got a little less MPG for that tank than I was thinking I was getting). But the real clincher was that my car is supposed to have a "gas low" light, and that light never came on (so that final "get to a station" warning never occurred). Instead I just lost power on the highway, and I had to pull over the side if the road (and have AAA bring me a little gas).
I guess I'll just have to be "cautious" about how far I push things in the future, as the gas gauge makes it almost impossible to tell the difference between 2 gallons left and nothing left. And without a "low fuel" light, I'm guessing (mostly based upon the trip odometer) as to how much fuel left I have when I'm "empty" (in the can't tell the difference portion of the gas gauge).