I know i shouldnt have but i read all the spoilers heh..
Spoiler!
I was really suprised when Misa wanted Rem to kill her
and then rem just tranfering the ownership to kira and misa wont be able to remember him! Made me sad for her since she kinda loved him and all.
End of spoiler 
not that that was really a big spoiler but still if someone hadnt seen it i dont want to give it away >.<