May be the film may click or not but I find no other start except Aamir Khan who has a very wonderful chemistry and equation with kids. No other star can match the charisma of Aamir. He can look serious, funny, lovable, pranky like kids all at the same time. Who can ever forget Hum Hai Rahi Pyar Ke, Jo Jeeta Wohi Sikander, Tare Zameen Par. How I still wish Yash Raj had taken Aamir for this movie too. Hope Saif is able to add his own stamp and work well with kids.