Matrix
Smith/OC
One of the best stories I've ever read. Period. Lovelace is the author, and she is superb at complexity and subtle emotions. Give her a read and see for yourself.
Awakenings
http://www.fanfiction.net/s/2389717/1/
The Dark Knight
Joker/OC
Harlequin Sequins is only 15 years old but she writes with a poetic flow that many seasoned writers fail to reach. Beautiful and realistic story. Dark and tragic. No fluff or Mary Sue's here.
Saviors and Hellion Smiles
http://www.fanfiction.net/s/4440949/1/Saviors_and_Hellion_Smiles
Scream Sanctuary
http://www.fanfiction.net/s/4583204/1/Scream_Sanctuary
Sherlock Holmes
Holmes/OC
Pure Victorian voice and realistic romance. 4 part story.
The Forfeit Daughter
http://www.fanfiction.net/s/2291027/1/The_Forfeit_Daughter
An Unforeseen Occurrence
http://www.fanfiction.net/s/2352616/1/An_Unforeseen_Occurrence
The Courtship of Helen Thurlow
http://www.fanfiction.net/s/2508153/1/The_Courtship_of_Helen_Thurlow
The Rules of Engagement
http://www.fanfiction.net/s/2638846/1/The_Rules_of_Engagement