How near is near? I don't know about Clinton itself, but there is the Stony Creek Puppet House Theater (
link) in Branford, usually a number of theatrical performances of well-known plays on the Guilford Green, the year-round attractions at The Ivoryton Playhouse (
link), The Yale Cabaret (no summer shows;
link), The University Theatre (no summer shows), The Yale Repertory Theater (
link), and finally, The Eugene O'Neill Theater (
link) in Waterford. Ah yes, there are also even more serious professionals at the Long Wharf Theater (
link) and the Shubert Theatre (
link).