This is an entertaining, light-hearted, and honest look at India from an American perspective.
I visited India (New Delhi) three times this summer (and counting..) for business projects, and I was able to watch this movie twice during the course of my flights. With each viewing I smiled and laughed at the way the American characters adapted after their first few "transition" days in India, and how the Indian characters earnestly tried to make them feel welcome.
As a previous reviewer mentioned, the movie doesn't mention the grittier side of India, such as the huge slum bordering the Mumbai (Bombay) airport, or the muddy, pot-holed, trash-filled streets and sidewalks of every town. However, it does shows the predominantly sweet nature of the Indian people which IMO is one of an India traveler's best rewards.
Aside, if you are planning to travel to India for the first time, take anti-malaria pills with you, a couple rolls of your favorite toilet paper, a phone that works in the 091 country code, and an openness of different cultures. Also, sit in the back seat of your hired car, because the view out the front will be like a widescreen viewing of the craziest "close-but-no-contact demolition derby" you've ever seen. Most, but not all, of these points are implied in the movie.
I recommend watching this movie after your trip, you will probably appreciate the movie more than if you watch it before. If you watch it before your trip, make sure you watch it again when you get back!