1. Amitabh Bachchan (I don't know why they call him a great actor! Whatever role he plays, he is always the Superstar Amitabh; not the character. Would have said the same for Shahrukh Khan. But films like Swadesh, Paheli, Chuk De saves him from this accusation)
2. Nana Patekar & Ajay Devgan (They always give the same expression)
3. Aswarya Rai (She is beautiful, no doubt. But her dialogue delivery is horrible. Only comparable to another Superstar Hema Malini.)
4. Kajol & Madhuri Dixit (They were the queens of Bollywood and they gave super hit films. But I can't remember just one exceptional performance of them. But look at Sridevi - she too had big commercial success, but we'll also remember her for her powerful performance in Sadma, Lamhe, Judai etc. But unfortunately for Maduri & Kajol I can't remember anything of the same status.)