- Actor Allusion: A subtle one. When Yash starts the song 'Aati kya khandala', the camera immediately cuts away to Naina, who laughs. Naina is played by Rani Mukherji, who had a role in the movie Ghulam from which the song originates.
- All-Star Cast: Shah Rukh Khan, Kajol, Hrithik Roshan, Kareena Kapoor, Amitabh and Jaya Bachchan...
- Fan Nickname: "K. Jo" for director Karan Johar.
Trivia / Kabhi Kushi Kabhie Gham