Actors Aamir Khan and R Madhavan joined their '3 Idots' co-star?Sharman Joshi ahead of the release of his Gujarati film 'Congratulations' as he put up a video. In the 2009 Rajkumar Hirani film, they played the popular characters of Rancho (Aamir), Farhan (Madhavan) and Raju (Sharman). A few fans also wished for a sequel that would bring their characters back