I just finished reading another one:3 Idiots: The Original Screenplay
(Conceptualized and compiled by Smriti Kiran, Om Books International, New Delhi, 2010)http://www.abebooks.com/servlet/BookDetailsPL?bi=3723379336&searchurl=sts%3Dt%26tn%3D3%2Bidiots%2Bthe%2Boriginal%2Bscreenplay%26x%3D0%26y%3D0
I was very happy that it has the Hindi dialogs in Devanagari. It has the Hindi dialog in one column and then the English translation on the right. All of the stage directions, however, are only in English. (Unlike the Nasreen Munni Kabir screenplay books for Awaara and Pyaasa, where the stage directions are in Hindi.)
It's also a little quirky when English is used within the dialogs. If the character is speaking only in English, then the dialog will be in English in Roman letters, including the character's name. But if they have any Hindi words at all in their speech, then the whole thing is in Devanagari. So sometimes there were will be several sentences that are completely English written in Devanagari, right below a paragraph of stage directions entirely in English in Roman letters.
I loved reading this screenplay. It was the easiest one I've read so far (most modern language, more Hinglish, less Urdu). The best thing about the book, though, is the introduction by Rajkumar Hirani and three other chapters about the writing and filming process by Rajkumar Hirani, Abhijat Joshi, and Vidhu Vinod Chopra. The chapters about the writing process are really incredible. I was just so impressed at the thought and creativity that went into writing the screenplay. There are also interviews with the actors (which I haven't read yet). I would highly recommend the book, though, just for the chapters about the writing process. ETA: The chapters about the writing process are all in English (excellent, well-written English).
It's funny, for all three of the screenplays I've read so far (Pyaasa, Awaara, and 3 Idiots), I've enjoyed reading the screenplay so much more than I enjoyed the films originally. I'm not quite sure why that is. Based on that experience, though, I went ahead and ordered the books for Mother India and Mughal-e-Azam even though I didn't particularly like either film.