Ignoring the obvious scientific inaccuracies and the fact that the inability to lie makes a world with no religion and no normative statements, the movie was on a whole a disappointment. I've never been a fan of Ricky Gervais's work, and now that I've actually seen one of his movies, my dislike has been justified. Even the idea behind the movie is childish and its execution left me feeling that the more interesting aspects were covered only briefly while I had to sit through watching Gervais act like a loser.
Still, it was mildly entertaining at points.
My Rating:

2 1/2 Arbitrary Shapes