20 Things You Didn't Know About Die Hard 2
3. William Sadler Trained In Martial Arts For Several Months
Though the whole naked martial arts shtick was far from his idea, William Sadler nevertheless made the canny decision to spend months prior to shooting training in both karate and tai chi.
Additionally, Sadler also begged Harlin to push his aforementioned nude scene as far back in the shooting schedule as possible to allow him time to train at the gym and fashion the requisite bod.
Sadler's certainly convincing as a major physical threat even if he falls far short of Hans Gruber on the charm factor, so it certainly wasn't for nothing.