Trisha has become much brilliant these days as she chooses best scripts. Let us take for instance, her upcoming films – 'Manmadhan Ambu', 'Mankatha' and 'Kushiga'. These films have got great roles for her. The actress was recently offered  to play the role of a sex-worker in a Telugu movie. Despites being offered Rs.1Crore as the remuneration, she refused to take up the offer. Says Trisha: 'I felt that I am not matured enough to experiment with such challenging roles.'   Trisha is now curiously awaiting the release of her magnum opus 'Manmadhan Ambu', which will be her first film with Kamal Haasan.   Shooting of 'Mankatha' with Ajith Kumar is rolling fast on floors.