Hugo Weaving Talks about the Human Side of Smith
Article published: May 14, 2003
"He started to develop human characteristics in the first one, to smell and feel emotions,' Weaving explains. "He's a sentient program that is programmed to evolve so his emotions are evolving, and he doesn't like that. I guess the major change to him in this one is that he's liberated to some extent, he's unplugged himself. But though in one sense he's a free agent, he's really not free because his sole purpose is still to destroy Neo; he has an imperative.'
And now he can replicate himself perfectly. Of course, Weaving isn't actually playing all 100 Smiths you'll see fighting Keanu Reeves' Neo in "Reloaded's' most memorable sequence, a blast of martial arts madness that's been dubbed the Burly Brawl but to which the actor refers less hyperbolically as the park fight.
Source: U-Press Telegram | Hal's Hugo Weaving Site