Los Angeles, July 27 -- Filmmaker Christopher Nolan is "terrified" to take on the romantic-comedy genre, calling it "one of the hardest things in the world."

Speaking on 'The Tonight Show Starring Jimmy Fallon', Nolan shared, "I think doing a rom-com would be incredibly difficult. I love watching those movies. I think doing a rom-com would be incredibly difficult. I love watching those movies," as quoted by Deadline.

Explaining that the comedy genre is something which cannot be hidden, the filmmaker continued, "Particularly, the risk they take when you make a film--if I show a film to people and maybe they don't respond to bits of it, I'm like, 'Ah, they don't get it. Whatever.' There's no hiding behind that when you do comedy. So, I wo...