I think this is truly a marvelous film. Very well scripted, and even more wonderfully enacted. Amitabh is truly the King of Hindi movies, you just have to watch him in those suits and Tabu has come of age as a seasoned actress, Paresh Rawal is OK.
An unusual story depicted with very realistic situations and laced with light-hearted humour. Oh the movie has some really witty dialogues too.
The cutest bits are the scenes between Amitabh and Zohra Sehgal (who plays his mom in the movie). Another highlight is the role played by the child actor aptly named sexy, who is very witty and worldly wise.
I think the bottom line of the movie is that girls mature faster than men do and thus age should really not be a bar when one looks for a life-partner.
After a long time,(for Hindi movie-goers) one gets to see a movie and say Ya! that was a NICE movie. And definitely worth a second watch.