Originally, the animated title sequence was going to be done in CGI, but the filmmakers decided to stick to traditional, hand-drawn animation instead. This animation was directed by Bob Kurtz, who had worked on some of the "Pink Panther" shorts. The CGI title sequence appears as an extra on the DVD, and is partly used as menu animation.
According to the 2004 teaser trailer credits David Newman was attached to compose the film's score at one point. The film's final composer, Christophe Beck, was originally hired to do the score, than a few months later he was off the project and Newman came in. Then a few months after that, Beck was back on.
The crucial "zoomed section" of the picture taken at the airport is clearly from a different picture than the one we are initially shown, as evidenced e.g. by the positioning of the characters in the background.
Insp. Jacques Closeau and Chief Insp. Dreyfus mention several times that Bizu was shot in the occipital lobe. In the scene when Bizu was shot, he was facing the gunman, so he would have been shot in the forehead. The occipital lobe is in the back of the head, not in the forehead.