Emmy-winning Felicity Huffman leaves the desperate housewives behind to create a memorable bigscreen presence in Duncan Tucker's "Transamerica." As Bree, a California man awkwardly trying to master womanly qualities while awaiting sexual-reassignment surgery, the actress displays a heartrending yet humorous tangle of body language. The prissy character's lonely struggle is further complicated by the discovery that her previous self, Stanley, once unwittingly fathered a child. Her therapist (Elizabeth Pena) insists that she come to terms with the past by meeting this boy, now an embittered teenage male hustler in New York named Toby (Kevin Zegers) -- who remains unaware he's her son during most of their cross-country road trip. En route to the West Coast, they meet a kindly stranger (Graham Greene) and visit Bree's unsupportive parents (Burt Young and an over-the-top Fionnula Flanagan). But without too much sentimentality, Tucker's feature debut offers a whimsical consideration of identity and the need for human connections. Starring Felicity Huffman, Kevin Zegers, Elizabeth Pena, Graham Greene, Fionnula Flanagan, Burt Young, Carrie Preston and Grant Monohon. Directed and written by Duncan Tucker. Produced by Linda Moran, Rene Bastian and Sebastian Dungan. A Weinstein Co. release. Drama. Rated R for sexual content, nudity, language and drug use. Running time: 104 min