Kung Fu Hustle (2005)

A hapless wannabe gangster, Sing, must overcome his inability to wield a knife and demonstrate his mettle in order to become a member of the notorious Axe Gang. The Axe Gang, meanwhile, wants to reign supreme by occupying the most coveted territory, which is a sacred street protected by an unlikely cast of characters, many of whom are highly skilled kung fu masters disguised as ordinary people. After several encounters with thugs, Sing overcomes his inadequacy and realises he is the greatest kung fu master of them all, destined to protect the sacred street.

Official website: http://www.kungfuhustle.com/