Koukaku Kidoutai: Stand Alone Complex, Eve no Jikan Recommendations
Both involve robots that develop individuality.
The basic theme is very much alike; Philosophy mixed up with robotics. What makes us human?
Both series are well thought through and a pleasure to watch, with each episode more emotional than the previous. Indeed, these are probably some of the best seinen series ever produced.
Both share setting with androids integrated into society. Both ask questions about humanity. Both are great masterpieces that could touch your perception of near (possible) future.