This is a pretty dummy question, since every person has it's own favorite movies or type of movies. But if you ask about prizes, Ben-Hur, Titanic, and Lord of the Rings: Return of the King have all won 11 Oscar Academy Awards. If you want my opinion, I liked Inception and Rain Man.
I recommend you to watch a very new movie "Robot" from Bollywood to analyse what is going on in the Indian cinema.However I personally like the best"Mohabbatain" staring charming Shah Rukh Khan and Cute Ashwaria with the legeng of Indian Movies Amitabh Bachan. It is romantic,dramatic a love tragic triangular.