It has been 20 long years since we were first introduced to the marvels of Hrithik Roshan. Yes, back in 2000, today was the day that HR made his debut in Kaho Naa Pyaar Hai, that too in a double role, with both his avatars romancing Ameesha Patel. As it completes 20 years in the industry, let's take a look at some unknown facts about the film.