I thought they officially retired the name Alan Smithee, but according to IMDB
, it still gets used quite regularly - as recently as 2011.
And I can honestly say that I have never seen an Alan Smithee movie all the way through (I did catch some of Morgan Stewart's Coming Home a long time ago on HBO).
The only Alan Smithee movie I have seen wasn't an actual Smithee movie. Walter Hill wanted to take his name off of Supernova and give it a Smithee, but he and the studio eventually agreed on the name "Thomas Lee" instead. That's when I thought they had ended the tradition. Apparently I was wrong.
So I nominate Supernova.