Friday Jan. 21

American Dragon: Jake Long (Disney Channel, premières tonight at 8 p.m., regularly scheduled for Fridays, Saturdays, Sundays at 5 p.m.): Set in Manhattan, this is the story of a Chinese-American teen able to morph into a dragon at will, thanks to a heritage that makes him a guardian of underground magic. Trained by his grandfather to battle evil, the boy still has time to fall in love with a gorgeous blond supervillain. Some mild scatological humor, but otherwise entertaining.