Here are two interesting game scores for fans of the Berlin Defense in the Ruy Lopez which I found on The Bishop's Bounty, a great resource even though no longer active. The first features Kentucky's own Jackson Showalter against Harry Nelson Pillsbury and is annotated here. The second is particularly timely in that it features a performance by thirteen year old Hou Yifan, who has recently become the Women's World Champion at sixteen. In this game, she defeats a previous challenger for the (Men's, so far) World Championship, Nigel Short. It was featured with full annotations in a column for the Washington Post by Lubomir Kavalek.
It seems fitting that the earliest game at Chessgames.com for this opening was played in Berlin. Look here for a further bibliography on this opening.