Nicholson and Hendry
At one point during the commentary Nicholson says that he often bumps into Ian Hendry when he's in England and because they never worked together during the making of the film, Hendry has to remind him that they once did a film together.
I have minor issues with this statement.
1) Nicholson and Hendry do have a scene together in the Ramblas.
2) Hendry died over 20 years ago...