OMG!! I love the Final Destination franchise (as unrealistic the deaths may be)
My top 3 deaths would have to be:
Nora Carpenter (Final Destination 2) (Got her head taken off by the elevator)
https://www.youtube.com/watch?v=jNuJfYh9fRk
Carter Daniels (Final Destination 4) (Burned and dragged against road by tow-hook)
https://www.youtube.com/watch?v=GVrWCSJGqGc
Isaac Palmer (Final Destination 5) (Head crushed to death by Buddha statue)
https://www.youtube.com/watch?v=81Tukx0WT1M