Actor Viggo Mortensen, best known as Strider/Aragorn in the “Lord of the Rings’’ trilogy, seems drawn to roles as outsiders. His characters drift, wander, and resist the status quo. They forsake the obvious path to their fates. That the actor is attracted to these roles - quiet, contemplative, often loners, men who conceal secret doubts, identities and rages - “probably has something to do with who I am,’’ Mortensen says. On Monday, Brookline’s Coolidge Corner Theatre will honor Mortensen for his independent outlook with its annual Coolidge Award.