Conversation so far:
Who was cast as the lead actors of Om Shanti Om?
Shah Rukh was cast as the lead. Padukone was cast as the female lead without a screen test.
Who was cast as the lead actress of Om Shanti Om?
Padukone was cast as the female lead without a screen test.
Who made the casting decisions of Om Shanti Om?
Farah Khan was in charge of casting.
Were there any difficult casting decisions for Om Shanti Om?
Rampal was approached by Khan and Shah Rukh for the part of Mukesh Mehra. Rampal was reluctant to do the role as he felt it was too evil.

Question: Did they have any other issues with the actors?
Self-contained rewrite: Were there any issues with the actors of Om Shanti Om?