From Wikipedia:
The One is a 2001 American science fiction action film directed by James Wong, written by Wong and Glen Morgan, and starring Jet Li, Delroy Lindo, Carla Gugino, and Jason Statham.
The film, which deals with the concept of multiverses and interdimensional travel, follows Gabriel Yulaw (Jet Li), a rogue agent who travels to parallel realities in order for him to kill other versions of himself to become a mythical super-being known as "The One". Li plays a dual role as Yulaw and Gabe Law, an LASD cop who teams up with a multiverse agent to prevent Yulaw from becoming the One.