Kill Bill: Vol. 2
I prefered the Volume 1 but the 2 was fantastic. The beginning was a bit long, and it was frustrating because she didn't kill Budd by herself, but I loved the ending with the talk scene with Bill, it was very profund. But anyway, the fighting scene at the end of the Volume 1 stays at the top.
In the two films, I quite liked the parallel with superheroes and the way the whole story was presented as a comic with the sound effects.