The full cast list of its complicated film?

The complicated film you're referring to is most likely "Crash" (2004), directed by Paul Haggis. Here's the full cast list of the film:

- Don Cheadle as Detective Graham Waters

- Sandra Bullock as Jean Cabot

- Matt Dillon as Officer John Ryan

- Thandie Newton as Christine Thayer

- Brendan Fraser as District Attorney Rick Cabot

- Ryan Phillippe as Officer Tom Hansen

- Terrence Howard as Cameron Thayer

- Jennifer Esposito as Ria

- Michael Peña as Officer Daniel Ruiz

- Ludacris as Anthony

- Shaun Toub as Farhad

- Keith David as Lt. Dixon

- Laurie Metcalf as Christine's Mother

- William Fichtner as Flanagan

- Tony Danza as Detective Frank

- Nona Gaye as Shaniqua Johnson