Drew Struzan is considered by many to be the greatest poster artist of our time. If you needed a great cast poster, Sturzan was every studios go to guy. His Star Wars, and Indiana Jones posters are classics.
If you had a smaller and quieter film with less star power, then John Alvin would be the man for the job. If Struzan excelled at portraits and getting the famous faces out in front of the public, Alvin excelled at getting the emotion of a movie perfectly. The E.T. poster became a classic because it connects everything from boy to alien in a homage that borrowed from Michelangelo's The Sistine Chapel in a way that is mythic and personal at the same time. Jurassic Park created fear with just the silhouette of a T-Rex, a splash of red and some fiery comet yellow- extinction and recreation perfectly caught in one image.
Struzan is still alive and doing the occasional poster. Sadly, Alvin passed away in 2008. Titan Books is publishing a retrospective volume edited by Alvin's widow, Andrea that will be released on August 26th. The Art of John Alvin not only collects some of Alvin’s finest work, but also includes previously unseen comprehensives and in progress sketches.
The unused posters shown here were gathered from various sites: /film, movies.com, IGN, THR and Flavorwire.