Pagla Kahin Ka (Such a Fool) is a 1970 Indian Hindi-language romance film directed by Shakti Samanta.

The film is well known for the Mohammed Rafi and Lata Mangeshkar's song "Tum Mujhe Yun Bhula Na Paaoge".

Even though Helen does her usual cabaret dance number in this film, it still contains one of her most dramatic roles, as she plays a rape victim.

Leading lady Asha Parekh said audiences didn't want to see Shammi Kapoor play a madman.

"[3][4] In her 2017 memoir "The Hit Girl", she wrote that Shammi Kapoor loved the song "Tum Mujhe Yun Bhula Na Paaoge" so much that in his later years, he used it as a ringtone for his cellphone.

[6] Director Shakti Samanta, impressed by Parekh’s performance in this film, cast her again in Kati Patang (1970), which became commercially successful, and won her the Filmfare Best Actress Award.