The actor, who has collaborated with Nolan on the Batman franchise and new film Inception, also claimed that the director is creating a team of people who he would like to work with in all of his films.
He told ITN: "We're very good friends. I like working with him and he likes working with the same people over again. As you see in [Inception], he's got Ken Watanabe, Cillian Murphy and me, and we starred in Batman Begins.
"In this picture there wasn't really a part for me. So I said, 'What is there?' He said, 'Well, there's three days, you're the father of Leonardo'. So I said, 'I'll do that'."
Caine also described co-star Leonardo DiCaprio as "very nice, very calm". He added "He's a great guy."
Inception opens in US and UK cinemas on July 16.