The two parts of the movie are quite different and in some cases both parts may not appeal to everyone. The first part, which is just long enough for my taste had everyone telling the truth at all times about everything, with one notable exception. They equated the 1300s with the 13th century, which is of course not correct. But this likely won't bother many people. Seeing a world with nothing but the truth means no fiction and no "little white lies". Quite boring and brutal, really. The part that's poking fun at religion may not be some people's cup of tea, but I suspect that these are those not secure enough in their beliefs to allow them to be challenged, no matter how humorously. To see what Gervais does with a pizza box is nearly worth the price of a ticket.
All in all, not a classic movie, but a much better way to spend one's day than many of the other movies out there today.
All in all, not a classic movie, but a much better way to spend one's day than many of the other movies out there today.