Which five of these actors appeared in more than one Tarantino film?

Which five of these actors appeared in more than one Tarantino film?

The Given Options:
Christopher Walken
Al Pacino
Uma Thurman
Denzel Washington
Samuel L. Jackson
Helen Mirren
Brad Pitt
Leonardo DiCaprio

Five Correct Answers:
Christopher Walken
Uma Thurman
Samuel L. Jackson
Brad Pitt
Leonardo DiCaprio