-- Jonathan Coulton: "Code Monkey" has gained a heavy, cult-of-nerd following. Yay! Join the club tonight at 9 p.m. at Great American Music Hall, 859 O'Farrell; $18. -- The Legend of Billie Jean (1985): And with the power of conviction? There is no sacrifice. The situation? It's a do or die. No one knew that better than Billie Jean Davy. Screens at midnight at the Castro Theatre, Castro and Market Streets; $10. -- Craig......

What is it about Xanadu that makes it one of our favoritest movies ever? We suspect that we're charmed by the verve of its awfulness; unlike mediocre disasters, the likes of which stampede endlessly through theaters, Xanadu's aspirations are so very mighty, and so very strange, and so utterly unattained. Good grief, it sounds like we're writing its epitaph. Nothing, of course, could be further from the truth, as Ms. O.N.J.'s masterpiece is as alive......