Did Taken really turn him into an action star, or was it Batman Begins?
Because I could swear all his moves from the Taken franchise were lifted 99% from his role as Ra's al Ghul.
And besides, he was badass enough to have being Batman's teacher/mentor!
I just really doubt he would've made Taken (being chosen, or being physically ready to make his character that believable/entertaining) had it not been for his role in BB.