Quite like the third little bear's stuff from Goldilocks, JTYJN was just right. Imran and Genelia have a natural flair for acting realistically. There are no "heros" in this film - just real people. Its not pretentious, not groundbreaking. Just pure good ol' simple Bombay fun. Just what the doctor ordered. Love the way the various relationships are portrayed, especially Jai and Aditi. As well as the various interplays between the friends, and between the kids and their parents (especially Jai and his mom).
The Meghna chick could've been replaced by someone better and a little less Maharashtian. She was as disjoint as Sonali Kulkarni in Dil Chahta Hai, and she was a major disappointment of the Rajat Kapoor/Kitu Gidwani sequence, which was awesome.
Talking of them, the cameos were lethal, and what made the movie really special. Naseeruddin and Arbaaz/Sohail were hilariously over-the-top. The music was perfect. Majorly disappointed that "jaane tu mera kya hai" never made it up on screen, and I really feel I'm the only one batting for this song. What to do, I love it so much.
And that brings me to who blew me away, leading me to rewatch his sequences, many a time over. Pratiek Babbar (Smita Patil's son). In a less than 10 minute performance, this kid packed in a role of a lifetime - one of the most powerfully-etched characters of the film, and displayed immense potential. In his short role as Amit (Aditi's son), Pratiek plays the artistic rebel brother whom the parents cannot reform - a behavioral deviant with a pet rat and a constant foul mood/mouth.
What Pratiek managed to do, was something that actors like Ajay Devgan, Abhishek Bachchan and Akshaye Khanna have never done - "displayed the OPTIMUM amount of intensity". While they are all immense intense actors in their own right, they conform to the Bollywood definition of "intense" which was written back in the 70s, and a little outdated - the serious eyes, the frown, the nonchalance, the voice. What Pratiek brings to the table is all of that coupled with the "natural" intensity that he displays. And of course, his mother's striking features screaming out of him. They way he sailed through this role, bringing it into his own, makes this one actor who could (if given the right opportunities) single-handedly change the way on-screen portrayals are done in Bollywood.