“Seminar” follows four young writers: Kate, Martin, Douglas, and Izzy, and their professor, Leonard. Each student has paid Leonard $5,000 for a ten-week-long writing seminar to be held in Kate’s Upper West Side apartment. As tensions arise and romance falls between students, they clash over their writing, their relations and their futures. Showtimes are 8 p.m. Fri., Sat. and opening night; 2 p.m. Sun. Through March 10th.