In Nayagan after the death of Saranya, Kamal kills the other dons in Mumbai during the last rites ( pindam karaithal). For e.g., After the death of Marlon Brando(Vito Corleone) and during the christening of Connie's(Marlon Brando's daughter) son, Al Pacino orders to kill the other New York Dons and Moe Greene. The basic plot is " How an unassuming normal person eventually becomes a powerful don". As everybody knows that these two movies share the same plot of Godfather trilogy. I would say these two Tamil films are the best examples for "Inspiration".
INSPIRATION : Nayagan and Pudhupettai from The Godfather Here are some popular movies that are well known among people to illustrate the above point. In that sense, Vetrimaran's bold gesture to credit the films which inspired him to make Aadukalam should be appreciated. It is basic courtesy for film makers to give due credits to the original. But the one that deserves criticism are the filmmakers who are merely doing copy-paste work without giving credits to the original film maker and stealing credits for somebody else's hard work. It is natural that any creative person continues to be inspired or get stimulated by things happening in real or reel life, knowingly or unknowingly.
The second kind vehemently denies of any inspiration and tries to convince oneself and others that it is purely a product of their own imagination. The first kind are the ones who are bold enough to quote the source for inspiration. Inspirations and Blatant Copies in Tamil Movies