Has a strong friendship with 24 star and fellow Canadian Kiefer
Sutherland. After Sutherland won the 2006 SAG Award for best actor in a
drama, he gave the trophy to Cassar as a sign of his
appreciation.
While filming the first episode of the 24 (2001) fourth season, he filmed
the opening CTU scenes in such a way that the audience first sees the
changes made to the building at the same time Jack Bauer does.
Is a huge film buff who watches a movie each day when he can.