Director Sooraj Barjatya's next film starring actors Amitabh Bachchan and Boman Irani has been titled 'Oonchai', according to reports. It was also reported that actor Anupam Kher has agreed to join the cast. "It's (film) currently in the pre-production stage and the team is all charged up to take it on floors around the month of September," reports claimed.