The 2002 kids comedy Big Fat Liar may have been big at the time of release because of starsFrankie Muniz and Amanda Bynes, but its secret weapon would end up being making Paul Giamatti blue, literally. Upon release, Big Fat Lair was just the third movie from director Shawn Levy, who would go on to executive produce Stranger Things and direct the upcoming Deadpool3, Speaking in one of their trademark "Breaks Down His Career" videos on Vanity Fair, Paul Giamatti opened up about his time making Big Fat Liar, and how its "iconic" blue pool scene ended up staining his skin for real after they'd finished the scenes.