Opening Titles

Alien

A (production company) production - A Brandywine-Ronald Shusett production

A (director) film - A Ridley Scott film

(Actor name) - Tom Skerritt

(Actor name) - Sigourney Weaver

(Actor name) - Veronica Cartwright

(Actor name) - Harry Dean Stanton

(Actor name) - John Hurt

(Actor name) - Ian Holm

And (actor name) as (character name) - and Yaphet Kotto as Parker

Music by (musician), conducted by (conductor) - music by Jerry Goldsmith, conducted by Lionel Newman

Executive producer (name) - executive producer Ronald Shusett

Screenplay by (screenplay writer), story by (storywriter(s)) - screenplay by Dan O'Brannon, story by Dan O'Brannon and Ronald Shusett

Produced by (producer(s)) - produced by Gordon Caroll, David Giler and Walter Hill

Directed by (director) - Directed by Ridley Scott

(Main title) - Alien

The movie Se7en also follows a similar structure with the directors and producers first, followed by the actors names and main title and in looking at other horror films this seems to be a running convention throughout, although there are some exceptions to the rule.