Whether it's the wealth of meta-cinematic references to both Shetty's and Khan's other work, or the evolving romance between Khan and Padukone, or the handsomely mounted action, or the occasionally excellent songs, Chennai Express always has something up its sleeve.
Although the film serves as a charming introduction to audiences new to the Bollywood genre, those well studied in the history of Shah Rukh Khan movies will be most rewarded, since the screenplay and songs make dozens of references to his earlier films.