Here's the list of series that have finished and are available in the Completed Series section:
Amagami SS
Elfen Lied
Highschool Of The Dead
K-ON!! S2
Kaichou wa Maid-sama!
Kuroshitsuji
Kuroshitsuji II
Ore no Imouto
Panty & Stocking with Garterbelt
Shinryaku! Ika Musume
Sora no Otoshimono: Forte
The World God Only Knows
Umineko no Naku Koro ni
Yosuga no Sora
Requested Series will also be located here as well.
All Series will be listed with a hyperlink attached so its easy to find what your looking for instead of trawling through pages.