The West Coast premiere of The Other Woman (20th Century Fox, 4.25) happens tonight in Westwood, and Hollywood Elsewhere will totally be there with bells, camera and notepad. An obviously broad sisterhood comedy (the term “sismance” doesn’t work at all) about taking revenge upon insensitive males, it’s been directed by Nick Cassevetes, produced by Julie Yorn and written by Melissa Stack. The Australian critics posting on Rotten Tomatoes are mostly negative (45%) — it might as well be faced. What I’d like to know is how does Cassevetes go from directing She’s So Lovely (’97), John Q (’02), The Notebook (’04) and the semi-respectable Alpha Dog (’06) to …uhm, this?