Replying to Movie buffs...trivia help

I'm trying to find movies that have doubling in them. Whether its the main actor playing dual roles, or two look-alikes playing doubles. Movies that come to mind are Parent Trap, Double Impact, Equinox, Steal Big Steal Little, A Stolen Life, Bowfinger, The Man in the Iron Mask, Adaptation, Dead Ringers, and Leaves of Grass.

I think I remember a Bond movie with the villain having a double in a face mask or similar. Wasn't there also a Matt Damon movie where there were clones (for organ harvesting...what's the name)?

Any help would be great. While on the topic, if you can think of any books that have the theme of two people looking the same, I might be interested as well.