PERCY JACKSON & THE OLYMPIANS: THE LIGHTNING THIEF ★★
(MAX on Comcast) It sounds like an Otis Redding cover band but is, instead, an unofficial cover of the Harry Potter franchise. A New York teenager named Percy Jackson (Logan Lerman) discovers he’s the powerful son of Poseidon. That Chris Columbus has been recruited to direct only multiplies that ersatz “Potter’’ feeling. For what it’s worth, Uma Thurman is having Marlene Dietrich fun as Medusa. (PG; runs through Feb. 2)
WESLEY MORRIS