This was the Incredible Hulk of lightning blasts, the amount of energy discharged must have been immense! Be sure to view large on black to get a feel for the strike.
Image Notes: Lightroom 4 may be one of the best things to happen to lightning photography since triggers. The highlight recovery is simply amazingly helpful on lightning shots. Check out the straight out of camera sample in the first comment to see how much LR4's highlight recovery helped.