Here is how the films that David has appeared have been rated in the US and reason for the rating:
Jude - Rated R for strong sexuality and intense depictions of death and birth
LA Without A Map - never released in the US - the region 1 DVD is not rated
The Last September - Rated R for some violence and sexuality
Being Considered - never released in US - it had a 15 rating in the UK
Bright Young Things - Rated R for some drug use
Harry Potter and The Goblet of Fire - Rated PG-13 for sequences of fantasy violence and frightening images
Free Jimmy - never released in the US
Glorious 39 - Rated R for some violent images and brief sexuality/nudity
St. Trinian's 2: The Legend of Fritton's Gold - never released in the US - rated 12 in the UK
How to Train Your Dragon - Rated PG for sequences of intense action and some scary images, and brief mild language
United - PG-13 for some disturbing images, smoking and brief strong language
The Decoy Bride - Rated PG for some rude content
Fright Night - Rated R for bloody horror violence, language and some sexual references
The Pirates! Band of Misfits - Rated PG for mild action, rude humor and some language.
In case you are not familiar with the MPAA (motion picture association of America) rating system, this is what it means.
PG — Parental Guidance Suggested. Some Material May Not Be Suitable For Children. A PG-rated motion picture should be investigated by parents before they let their younger children attend. The PG rating indicates, in the view of the Rating Board, that parents may consider some material unsuitable for their children, and parents should make that decision. The more mature themes in some PG-rated motion pictures may call for parental guidance. There may be some profanity and some depictions of violence or brief nudity. But these elements are not deemed so intense as to require that parents be strongly cautioned beyond the suggestion of parental guidance. There is no drug use content in a PG-rated motion picture.
PG-13 — Parents Strongly Cautioned. Some Material May Be Inappropriate For Children Under 13. A PG-13 rating is a sterner warning by the Rating Board to parents to determine whether their children under age 13 should view the motion picture, as some material might not be suited for them. A PG-13 motion picture may go beyond the PG rating in theme, violence, nudity, sensuality, language, adult activities or other elements, but does not reach the restricted R category. The theme of the motion picture by itself will not result in a rating greater than PG-13, although depictions of activities related to a mature theme may result in a restricted rating for the motion picture. Any drug use will initially require at least a PG-13 rating. More than brief nudity will require at least a PG-13 rating, but such nudity in a PG-13 rated motion picture generally will not be sexually oriented. There may be depictions of violence in a PG-13 movie, but generally not both realistic and extreme or persistent violence. A motion picture’s single use of one of the harsher sexually-derived words, though only as an expletive, initially requires at least a PG-13 rating. More than one such expletive requires an R rating, as must even one of those words used in a sexual context. The Rating Board nevertheless may rate such a motion picture PG-13 if, based on a special vote by a two-thirds majority, the Raters feel that most American parents would believe that a PG-13 rating is appropriate because of the context or manner in which the words are used or because the use of those words in the motion picture is inconspicuous.
R — Restricted. Children Under 17 Require Accompanying Parent or Adult Guardian. An R-rated motion picture, in the view of the Rating Board, contains some adult material. An R-rated motion picture may include adult themes, adult activity, hard language, intense or persistent violence, sexually-oriented nudity, drug abuse or other elements, so that parents are counseled to take this rating very seriously. Children under 17 are not allowed to attend R-rated motion pictures unaccompanied by a parent or adult guardian. Parents are strongly urged to find out more about R-rated motion pictures in determining their suitability for their children. Generally, it is not appropriate for parents to bring their young children with them to R-rated motion pictures.