i like the hot rock in the stomach.

That's my favourite too,LMAO every time!

He has killed so many but here are some which I absolutely loved :-
1 - The girl splattered as an impression on the side-wall of a RV in part VI: Jason Lives.
2 - Crispin Glover getting a meat cleaver into the face in pt. IV: Final Chapter.
3 - The hitch-hiker getting stabbed through throat in pt. IV: Final Chapter.
4 - The guy in the wheelchair getting a huge machete through his face in pt.2.
5 - The head squeeze and eyeball-popping in pt.III: 3D.
6 - One hit to the head and its clean off the body. The killing of the black man in pt.VIII: Jason takes Manhattan.
7 - The repeated stabs and then folding the bed to break the body into two in Freddy vs Jason.
8 - Impaling the girl in the tent with a huge spike and then ripping it upwards to tear her into two pieces in pt.IX: Jason goes to Hell.
9 - The sleeping bag kill in pt.VII: The New Blood.
10 - The blonde's face being frozen in an instant then smashed on the edge of the table into a million pieces in Jason X.
11 - The lead girl of the original getting stabbed with an icepick in pt.2.

i also forgot to mention the flare in the mouth scene.

the sleeping bag kill and momma pam voorhees's death in the original. i also liked in part3 when jason squeezes the guys head until his eyeball comes shooting out of his skull.:)

That's part 3.

It's also my fav.