This is the second time the stars Aamir Khan and Shah Rukh Khan share screen space (towards the song at the end of the movie) after Pehla Nasha (1993)in which they cameoed together for a scene.
In the Murabba story, when Vineet Kumar(Vijay) is talking to the Omelette guy, his lips move for a full sentence but only half of the sentence is audible in the vocal playback.