The complete 2009 series.
Special Features (per the Amazon page):
All 91 episodes of Justice League and Justice League Unlimited on 14 discs
Creator commentaries, making-of featurettes, and more
Exclusive bonus 15th disc with the all-new retrospective "Unlimited Reserve: Exploring the Depths of the DC Universe"
Discs 1-4: 1.33 aspect ratio
Discs 5-14: 1.78 aspect ratio
English audio on all episodes, plus French and Spanish on discs 9-12 and Portugese on discs 13-14
French and Spanish subtitles on discs 1-8
Portugese subtitles on discs 13-14