The plot is good, but it also fills with the thing that 'doesn't need' and it makes you bored (especially for the most scene of Hritik and Kareena). It didn't get to the point of the story.
I respect Karan Johar as a talented director, and SRK as a fabulous actor. However, they both weren't thinking in this film, not much STORY was told in 3 and a half hours. I could have predicted the ending before I watched the movie.
Amitabh Bachchan was good, and his role is similar to his role in Mohabbatein and Ek Rishtaa, which got tiresome.
Jaya Bachchan was good as the mother, and almost (close though) reaches the brilliance in Fiza.
Shahrukh Khan was great as usual.
Kajol showed a side where we had never seen. At times it was overacting, but she did not let us regret the fact that this was her last movie. She is the darling.
Hrithik Roshan was excellent, and he came very nice in this movie. He does a good job dancing, but his ending scene was not so great because of the script.
Kareena Kapoor was not bad, but more as skin show in the film. The only thing Kareena Kapoor was good at was her facial expressions, and did a nice job spoofing "Clueless."
Last, but not least Alok Nath and Farida Jalal were a nice addition to the cast.
The songs were also catchy. My favourite one is “Suraj Hua Madham”. Also the guest appearance by Rani Mukherjee was good, but too KKHH like.
All in all, this movie is not that bad. It's a great entertaining movie, and it deserves to watch.