Stocking stuffer idea: Game Deals under $20

Found a few stocking stuffer ideas with the following games $20 or less right now on Amazon:

Mirror's Edge (PS3 and 360 versions are both $15)
Dead Space (PS3 version is $15, 360 version is $19.96)
Army of Two (PS3 version is $15, 360 version is $15.98)
Lord of the Rings: Conquest (PS3 version is $15, 360 version is $19)
F.E.A.R. 2: Project Origin (PS3 and 360 versions are both $15)