Cumulative Sum without Script

Question

For this question, I've created a Google Apps Script function, that calculates the cumulative sum of a range. Martin Hawksey on Google+ made a comment about a more efficient way of calculating the cumulative sum:

function cumulativeSum(array){
  var output = [];
  for (i in array){
    if(i==0) {
      if (array[i].length > 1) throw ("Only single column of data");
      output.push([array[i][0]]);
    } else {
      output.push([output[i-1][0] + array[i][0]]);
    }
  }
  return output;
}

My question is: can this be achieved with the usage of formula's?