Which is actually pretty useful and readable, imho (if formatted correctly):

  return a ? b :
         c ? d :
         e ? f :
         g;

Side note: this does not work in PHP, as the operator is left-associative instead of right-associative there. The above in PHP would be evaluated as:

  return ((a ? b : c) ? d : e) ? f : g;

Which is almost never what you want. I can't even format this properly to convey intent.