My Take -
Nice film, could have said i loved it but i didnt, it was funny n wasn't. For some (who as Marc http://marchazard.blogspot.com/ mentions seem to have an agreement of - laughing at all times in comic movies) watching these movies is like having dinner at a really expensive 5 star hotel, they know its well made, all the 'right' crowd is sitting beside 'em, they know its well heard of and they've paid fair bit for it .. so they end up forcing themselves to like it, therefore explaining the delayed guffaws, Marc.
What i liked about this film though is that it makes no attempt whatsoever at trying explain its weirdness, its sub-standard portrayal of Indians, its almost rude humour, its barely relevant end (the train compartments!), the misuse of Bill Murray, Irfan Khan and an absolutely unfinished finish. Whats amazing is that its all that jazz (in this case lack of it) that actually works for the film!
Caution: Its not a comic film, though at times its funny. Its just a film.