For some time there was a rumour that Mr Giugiaro had something to do with the Alfa 156 design (pre-His-facelift of course)
And I did found something:
“In actual fact, Giugiaro contributed to the 156 during the initial stage of the project.”
Maybe it was a bit like an initial design of Gallardo, later finished by Mr Donckerwolke; or a wind-tunnel contribution to MC12 project?
http://www.alfaromeopress.com/press/article/2997

And more
“Eng. Bandiera also touched upon the styling contribution driven through by Giugiaro in the realization of the ongoing 156 model.”
http://www.motorsportscenter.com/printer_36.shtml
http://www.alfacentro.com/features/news/

Both from december 2002, so pre-Giugiaro-2003-156-facelift