Run down the list exactly as you would the real notebook: you can specify cause of death and make it anything you want. I want to see what people will come up with.
Here is my list:
Yoruichi Shihouin (Bleach)
Sosuke Aizen (Bleach) - spontaneous combustion
Rangiku Matsumoto - bleeds to death from implant-related ruptures
Nnoitara
Neleil Tu Oderschvank.
Everyone from Naruto except Sai, Sasuke, Deidara, Kisame,Tobi, and Konan - I'm going to make her my wife.
Pein dies in such a way as to make it look accidental so I can have Konan. 
Ash Ketchum (Pokemon) - swallows a full bottle of Advil.
Everyone in Tenchi-Muyo except Tokimi and Z.
Nate River/Near (Death Note)
Faye Valentine - suicide