At the age of 86, actor Christopher Lee had to learn more lines of dialogue for his role in "Triage" than for any other film he has done before. His career spanned more than 60 years and over 300 film and TV productions.
To prepare for his role, Colin Farrell shed 44 pounds to achieve a skeletal-like thin appearance that surprised both reporters and close friends. To obtain this look, he reportedly lived on black coffee, Diet Coke, and tuna.
In the film, Joaquin asks Mark his age, to which Mark replies he is 34. Colin Farrell was in fact 33 when making the film. Joaquin later admits in the film that he is 86, which was the age Christopher Lee was at the time of filming.