Marin Theatre Company's sold-out production of playwright Tracy Letts' Killer Joe has moved to the Magic Theatre, and reactions couldn't be stronger. It's essentially a hillbilly noir set in a Texas trailer park, in which members of the white trash Smith family (giving new meaning to skid-marked tighty-whities and greasy wife-beater tank tops) hire a contract killer with "eyes that hurt" (a sinister Cully Fredricksen) to kill the dim-witted dad Ansel's ex-wife in order to cash in on a $50,000 insurance policy. But Lee Sankowich's directorial pacing is erratic, and the performers use vastly different styles. The hilarious Howard Swain (as Ansel) appears to have fallen out of a Cheech & Chong movie, while Stacy Ross (as Ansel's new wife, Sharla) is superb in her adulterous realism. The first act ends in a beguiling, slow seduction between the killer and the virginal underage daughter (Anna Bullard); after intermission the show cranks the violence up so high that it rivals the most gleefully disturbing moments of a Tarantino flick. But the excruciating and titillating difference is that this is live theater, not the relative safety of celluloid. Killer Joe's visceral punch to the privates may explain the two outraged audience walkouts on the night I attended as well as the mini-standing ovation, marking what I'd call a successful night at the theater.