There have been plenty of iconic director + actor duos over the years, with some of the most celebrated in cinema history including Martin Scorsese and Robert De Niro (and/or Leonardo DiCaprio), Quentin Tarantino and Samuel L. Jackson, and Steven Spielberg and Tom Hanks. These ones might be noteworthy and high profile, but they don't necessarily rank among the most prolific or longest-running, at least when you judge such partnerships by the number of films made together.