I just have to add these links to my favorites. I just read two ficlets with a pairing I never would have dreamed of, Sark/Seth (Alias/OC crossover). The author captured both Seth and Sark wonderfully and made their interaction really work. The links are below.
35 Minutes by by
addictedkitten Sark and Seth meet on a plane.
http://www.livejournal.com/users/addictedkitten/75199.html Six Days Later (Sequel to 35 Minutes) by
addictedkitten Seth and Sark, in the hotel room, with the rope.
http://www.livejournal.com/users/addictedkitten/78824.html