Edit: added this 80/28/07: CURRENTLY, CD Japans sells these for under $20 + S&H
"Zoku Robot Hen"
- episode 179 [The Blue Knight #1 (E::cry ]
- episode 180 [The Blue Knight #2 (E::cry ]
- episode 126 [ Roboids (E::cry ]
I would rate this one as most desirable for English speakers, because none of these episodes were included in the NBC version. Edit: added this 80/28/07: The Blue Knight is the central supporting character in the 2003 series, and I would think that most Atom fans would want this disc. Roboids is also a great story.
"Robot-hen"
- episode 82 "Robot kyougikai no maki" [The Robot Olympics (E: 073, Robot Olympics)]
- episode 116 "Shijou saidai no robot no maki (part 1)" [Greatest Robot #1 (E::cry ]
- episode 117 "Shijou saidai no robot no maki (part 2)" [Greatest Robot #2 (E::cry ]
This one has only 2 episodes that were not on the NBC version, but they are highly desirable. Edit: added this 80/28/07: Greatest robot is probably the single best-loved story of all. With Naoki Urasawa's recasting of this story as a mystery, this one has 5 versions.
"Meisaku Hen"
- episode 9 [Black Looks (E:13, The Deep Freeze]
- episode 16 [White Planet (E: 008, Silver Comet)]
- episode 148 [Robio & Robiet (E: :cry ]
Only one that was excluded from NBC collection.
The other three discs have episodes that were included on the NBC version.
"VS Hen"
- episode 26 [Atlas (E: 026, Don Tay's Infernal Machine)]
- episode 19 [Astro Boy vs. Garon (E: 019, Cosmic Giant)]
- episode 91 [Garon’s Counterattack (E: 082, Galon From Galaxy)]
"Tanjou-hen" [Creation of the siblings]
- episode 1 "Atom tanjou no maki" [Birth of Astro Boy ('''')]
- episode 37 "Uran-chan no maki" [Uran (E: 025, The Strange Birthday Present)]
- episode 93 "Cobalt no maki" [Cobalt (E: 084, Brother Jetto)]
"Uchu-hen"
- episode 10 "Ivan no baka" [The Fool Ivan (E: 011, Strange Voyage)]
- episode 56 "Chikyu boueitai no maki" [Earth Defense Army (E: 032, The Moon Monsters)] (note that a subtitled Japanese-language version of this episode is on the English set #2!)
- episode 71 "Chikyu saigo no hi no maki" [Last Day of Earth (E: 062, Attack From Space)] Edit: added this 80/28/07: Featuring THEM!