Big Fat Liar - Official site includes trailer and plot summary. Requires Flash. HARO: Big Fat Liar - Review looking at teenage actors and the blatant product placement in the film. Also includes some images. All-Reviews: Big Fat Liar - Various reviews with star ratings. Rotten Tomatoes: Big Fat Liar - Reviews, photos, trailer, synopsis, and discussion forum. IMDb: Big Fat Liar - Cast, crew, users' comments and links. Metacritic.com: Big Fat Liar - Reviews of the film from several sources.