I hv 2 choices : 1. Mughal-e-azam - Salim (Dilip Kumar) touching Anarkali (Madhubala) with a feather and a classic song in the back ground (perhaps by Bade Ghulam Ali saheb). 2. Dil Chahta Hai - Amir , bending on his knees, asks for Preity's hand during her engagement ceremony. I hv never come across such dramatic scene anywhere else in film history.