Religion is one of the few things that can provoke otherwise normal people into spittle-flecking diatribes. Well, now there's a counterpoint to those street-corner preachers who yell into the wind. Tonight at the Westport Flea Market Bar & Grill (817 Westport Road), actor Roger Scott Jackson plays his atheist-evangelist character Sam Singleton in his play Patriarchs and Penises, about growing up godly and then questioning his faith. That sounds heavy, but it's actually really funny. Jackson injects many irreverent, thought-provoking jokes into two satirical acts. Admission is 10 bucks in advance or $15 at the door. For details, see samsingleton.com.