Short : Good movie. Excellent screenplay, editing and direction. Old story. Fun filled and exhilarating. Good ROI :)
Long :The movie depicts two facets of love, both portrayed by Saif. 'Kal' ka love, is typical old movie ishtyle love which surprises with its clear headed direction. It is an old story portrayed differently and still wins hearts.
'Aaj' ka love is equally breathtaking. Saif and Deepika do justice to their roles though there was scope for improvement. Direction, screenplay and editing cover up for it. In the end, you think you know what's gonna happen but then it suddenly changes track and makes you say, Wow! In short, it is a fun filled joy-ride. Amazing locations in London, San Francisco and specially Delhi, make you wonder how beautiful this world is!
Go watch it. It is definitely worth the money. :)