SRK, Katrina Kaif and Anushka Sharma
One refreshing thing is SRK acts his age at least for some part of the movie. It is a welcome break from seeing him as 'just out of college' kid. With the opening, Samar (SRK) is shown as challenging death, he takes on risky assignments such as bomb defusing in the Indian Army. According to him, its only his death which will make Katrina (Meera) lose her faith in God (with whom she has a barter system going on). She has given up seeing him because of one such barter, even though she is deeply in love with him in spite of being engaged to another man.
Meera's understanding of love is somewhat incomplete; she thinks love is something to be avoided. Her mother's elopement with another man when she was 12 probably had a huge influence on her outlook. But in comes Samar with his happy go lucky attitude and creates a reunion between mother and daughter. She sees her mom very happy and content with her partner. After the reconciliation Meera's outlook on love is entirely the opposite of her previous one - now she thinks people have to run away to find true love. Her habit of 'praying' to God frequently and having an ongoing agreement of barter system is very annoying.
However Anushka's character (Akira) is more annoying with her rustic attitude of youngsters and sex. She has no problem bringing it up even to strangers.
Unless you are a fan of either of these actors, you can skip this movie.