Who doesn't want to catch that wave? Dana Brown's visually stunning surfer docu "Step into Liquid" had the biggest opening of the summer in the art house market, grossing $135,985 on five screens for a per screen average of $27,197. "Le Divorce" starring Kate Hudson and Naomi Watts took the second spot for the weekend, while "The Magdalene Sisters" continued to attract large audiences in its second week of release, with the third largest box office gross.