The fart and room freshener act has been overdone - it entertains in some early occurences only. The argument with the security guard does not entertain.
The Raavan-Hanuman scene is unique and interesting to watch. The interiors of the flat have been done in an extremely tasteful manner. The 'Suhaani raat dhal chuki' remix/rehash is funny! The climax is not very funny - but tickles.
Paresh Rawal is typically him - excellent. His scenes at times can get loud but that's typical of comedy films like these. Konkona Sen Sharma has done an excellent job - it was the first time I saw her being funny! Ajay Devgan comes third in terms of standing up to the other two actors.
Overall, it's an okayish film made in a very stylish manner. The movie doesn't make you laugh - but it continuously tickles you. And that's no small thing!