Robert De Niro is an American actor. He gained his reputation as a volatile actor in Mean Streets (1973), which was his first of 8 films with director Martin Scorsese. In 1974, De Niro received an Oscar for best supporting actor for his role in The Godfather: Part II (1974) and received another 4 nominations for best actor. He won the best actor award in 1980 for Raging Bull. He also received 8 Golden Globes nominations. De Niro currently heads his own production company, Tribeca Film Center.

Leonardo Wilhelm DiCaprio (pronounced /dɨˈkæpri.oʊ/; born November 11, 1974) is an American actor and film producer. He has received many awards, including a Golden Globe Award for Best Actor for his performance in The Aviator (2004). In addition, he has won a Silver Bear, a Chlotrudis Award and a Satellite Award among others, and has been nominated by the Academy Awards, Screen Actors Guild and the British Academy of Film and Television Arts...(Wikipedia)

After serious deliberations about entering the priesthood - he entered a seminary in 1956 - Martin Scorsese opted to channel his passions into film. He graduated from NYU as a film major in 1964. Catching the eye of producer Roger Corman with his 1960s student films (including co-editing Woodstock (1970)), Scorsese directed the gritty exploiter Boxcar Bertha (1972). Mean Streets (1973) followed in 1973 and provided the benchmarks for the Scorsese style