18. 'Contact' (1997)
A loopy performance in a cosmic slop of a movie, McConaughey's hippie-dippy man of God is too obviously meant to provide a thematic (and romantic) counterpoint to Jodie Foster's atheist scientist. But one thing you always have to love about McConaughey: The man commits fully to every part. His very presence warms up Robert Zemeckis's poetic-sappy opus, giving it a ragamuffin spiritual sweetness that serves as a necessary countermeasure to the stargazing awe and treacly daddy issues going on elsewhere in the film.