*1/2 Casa de mi Padre A genial but awfully thin goof on cheap Mexican telenovelas, with star Will Ferrell leading a Latin American cast that includes Gael Garcia Bernal and Diego Luna, the bad boys from “Y Tu Mama Tambien.’’ It’s extra mild salsa - a “Funny or Die’’ web-sketch that somehow escaped the corral. In Spanish, with subtitles. (84 min., R) (Ty Burr)