Many comedians hold out hopes for a career in television, but with Todd Barry’s everyman looks and slow, dry-as-toast delivery, he knows better than to hope for his own sitcom. Nonetheless, he’s lent his unmistakable, sardonic voice to cartoons like “Dr. Katz, Professional Therapist” and “Home Movies,” and made a hilarious cameo on “Flight of the Conchords” as an arrogant, would-be Conchord. There’s nothing loud or pretentious about Barry’s stand-up act; instead, Barry relies on his quiet charm and good-natured leeriness, quipping back and forth with the audience and chuckling gently as if trying to contain his laughter when one of his retorts strikes him as particularly amusing. In fact, his rapport with his audiences is so natural that for this tour he’s abandoning scripted stand-up altogether in favor of just riffing with the crowd.