I watched a few movies this winter:
Dil Kabaddi: 4.5/5
Rab Ne Bana Di Jodi: 3/5
Ghajini: 4/5
I have to say that both RNBDJ and Ghajini were quite unbelievable, but I think the premise of RNBDJ was far more unbelievable, at least if in Ghajini, the mental condition is real (which I don't know about). Also, the fact that everyone knew the story of Ghajini, pretty much, and it's still a big hit shows that it was made pretty well.
Dil Kabaddi was a great movie and its unfortunate it's so low budget that it only hit the metros. The movie is an absolute comedy and had me out of my seat so many times. Irrfan Khan is one of the finest comedy actors in the industry these days, methinks.