Well, let's count the deaths...

(in order of my memory =P)
Dosu
Haku
Zabusa
The father of that kid in the misty country-whatever
That bad-boss who zabuza wasted
The third examiner (hayate?)
The three students that Orochimaru killed for their apperances
The guy who Gaara killed (scarred guy with the umbrellas)
The woman who Gaara killed (you know which one)
The Third
The Fourth
The First (hehe)
The Second (well, technically)
The leader of the hidden sand village
Choji
Tsunades two loved ones
Sasukes parents/clan
Countless other people who were non-vital
(forgive my lack of names)

It ain't too bad? Who have i left out?