The 28 actors in the collage can be sorted into pairs of actors who have, at one time or another, played the same character. For instance, Milla Jovovich and Ingrid Bergman have both played Joan of Arc (in The Messenger and Joan at the Stake, respectively).
There is a unique way to enter the names of the fourteen characters into the blanks below the collage. Some of the letters in the character names are marked with numbers. Take those letters and order them according to the numbers. They spell TYPE OF TRAIN OR ELEVATOR. The answer is FREIGHT.
Solved puzzle (PDF)
2006 MIT Mystery Hunt