Have to agree that one is pretty well stuffed, however a B744 in Germany was the victim of a jacking stuff up and had a few creases ironed out of its rear end some time back, and I believe it went back into service. Not quite as bent as the B737 banana, but still nothing would surprise me
This is the link to a thread on another forum, and its titled A340, but it was in fact a B747.
http://www.**********/forum/viewtopic.php?t=3982
J