Forgot the name of an anime help me.
 

Ok well i was watching this anime a long time ago and i forgot the name of it. I dont remember everything about it but it was about this normal guy who meet this girl who was an alien and they had a maid who was a spaceship that was powerful enough to destroy the world. Yah thats all i remember.

DearS ?
 

Could it be DearS?
Dears - Wikipedia, the free encyclopedia

no its not that. I remember a little more. In the first episode the kid picked up a dog which was really an alien that tried to kill him the the "alien" girl saved him. And also her dad was held hostage by another alien but she stopped it by using a baseball bat.

is it FLCL

no its not fooly cooly

Sounds like 'The World of Narue (成恵の世界)'.
http://www.mbs.jp/narue/index2.html(jp-language)
STORY(on the bottom-left corner in the link) is similar to your explanation.
Well, I have never watched it.

Ll isn't that the name that Gackt gave his fans too ? XD

Anyhow;; i dont know what you mean..sorry ^^

AHHHH ty ty ty ty ty its the world of narue THANKS SOO MUCH