Batman: Arkham Asylum

Contents: A prop batarang, medical dossier on Arkham patients, a bonus DVD, and an insanely large case

Batman fans are notoroius for collecting anything with an insignia on it, but the Arkham Asylum collector's edition pushed the limits of this by asking them to shell out an additional $40 for a cheap plastic (and unusable) batarang prop. The medical dossier on the Arkham Asylum villains was a nice inclusion, but didn't offer anything the in-game dossier didn't already tell you and to top it all off the case for all of this was absolutely massive, ensuring it'd never fit properly on any game shelf.