Ah yes:
"it was re-released in 2008 as Ghost in the Shell 2.0 with new audio and updated 3D computer graphics in certain scenes."
Highschool Of The Dead
Did you get the old or new (with the OVA) release?
Ex Machina doesn't really appeal to me that much so I haven't bought/watched it yet,I did like Appleseed (2004) and Appleseed (1988).