The Lewis Center for the Arts' Program in Theater at Princeton University will present "Uncle Vanya" by Anton Chekhov, directed by faculty member R.N. Sandberg and featuring senior Zachary Salk as Vanya, at 8 p.m. Oct. 18, 19, 23, 24 and 25, in the Matthews Acting Studio at 185 Nassau St. A talk-back discussion with Princeton theater lecturer Mark Nelson will be held following the Oct. 24 performance.