year with an extended cameo in  Karan Johar 's directorial debut,  Kuch Kuch Hota Hai  for which he earned a second  Filmfare Award  under the  Best Supporting Actor  category. In 1999,  Khan  starred in three films:  Hum Saath-Saath Hain: We Stand United  and  Biwi No.1 , two of the highest grossing films that