Most Helpful Guy
Oooh good choice.
I would probably go with the Finallee of Black's Seven. Big gunfight, our anti-hero surrounded. He's given an ultimatum.. and it fades to black and two shots ring out. Very dramatic. :p
If it was just final plotline or final scene though I would go with Dr Who's Survival: https://www.youtube.com/watch?v=9Ks8BA5psNM
Most Helpful Girl
The finales of Buffy and Angel are pretty amazing