NEW YORK -- Animator Bill Plympton's unique brand of anarchic, gross-out humor is very much on display in his feature-length spoof of high school romances and gothic horror tales. The tale of a perfect teen couple -- a head cheerleader (Sarah Silverman) and star quarterback (Dermot Mulroney) -- whose romance becomes unglued thanks to the arrival of a geeky new student (Eric Gilliland) who comes between them, "Hair High" plays like a demented, animated cross between "Grease" and "Carrie."

Plympton's distinctive, hand-drawn style can be a little tough to take at feature length, and this film, like his previous full-length efforts, again demonstrates that narrative is not his strong suit.

But there's no denying the hilarity of the sight gags on display, from a sexually rampaging chicken mascot at a high school football game to a biology teacher literally throwing his guts up to an army of decomposing bodies rising from their watery graves.

As usual, Plympton's animation is definitely not for the kids, with a preponderance here of ribald and vulgar visuals that are not for the squeamish.

This effort features, for the first time in Plympton's oeuvre, a plethora of name performers providing the voices. Besides the aforementioned, other notables lending their aural talents include Keith and David Carradine, Martha Plimpton, Craig Bierko, Justin Long, Matt Groening and Ed Begley Jr.