Not sure how many of you have heard the name of the original script which eventually became Hancock. Apparently, the script was written in 1996 and was legendary in Hollywood for a good decade. It was rewritten umpteen times before becoming the Will Smith vehicle currently in theaters.
In any event, the original script, which I imagine would have had difficulty pulling off a R rating, can be found here in pdf form. I read the whole thing recently, and I've got to say - it's kind of depressing. The character of Hancock isn't likable at all in that script, and the husband goes through a McFly character arc. While the second half of the finished movie Hancock got weird, the first half more than made up for it. I won't say the rewrites were a success, but that original script certainly wasn't doable as-is.