who here can tell me were i can watch the japanes version of astro boy the movie!!!!!!!

ok so i was on YouTube looking @ astro boy AMVs & i noticed on one there were clips i have never seen befor & one i noticed was the ending was slightly different but it was 1,000 freekn' times better than ours (ours meaning americans)so i would realy apreshiate it if u could tell me ^^. PLEASE!!!!!!!!!!!!