Mahoromatic (まほろまてぃっく)

Mahoromatic (まほろまてぃっく Mahoromatikku) is a sci-fi romantic comedy manga and anime series which contains elements of the literary genre of tragic dramas. It is about a former female android soldier, Mahoro. Driven by guilt from her actions during her combat days, she decides to dedicate the rest of her life to serving the son of her late commander as a maid.
The manga proved popular, and was adapted into two anime series by Gainax: "Mahoromatic: Automatic Maiden" and "Mahoromatic: Something More Beautiful" (まほろまてぃっく~もっと美しいもの~ Mahoromatikku: Motto Utsukushii Mono)
The first series consisted of twelve episodes and ran from September 10, 2001 to January 28, 2002 on BS-i in Japan, and more or less followed the manga to the third volume.
The second series also followed the manga, culminating in the story's end. This series ran from September 26, 2002 till January 16, 2003.

# Reference
http://en.wikipedia.org/wiki/Mahoromatic
Mahoromatic: Collection 1 - Automatic Maiden(Amazon.com)