Film quotes? Bollywood-Buffs, please help!

To all the Bollywood-Buffs out there!
From a dramaturgical point of view its obvious, that this movie is full of quotes and hommages to former films. I got most of the western allusions (grease, john woo's birds etc.), but was unfortunately unable to decipher the Bollywood Allusions. Which other indian movies are quoted in Main Hoon Na? Especially in the song and dance sequences? Help me out.