Most theatergoers don't want to see anything too challenging in the summertime. If you're looking for that kind of amusement, you'll find it aboard the Showboat through Aug. 22. Larry Shue's 'The Nerd' offers twists and turns that will turn you upside down once or twice before the evening is over ... with some genuine laughter along the way.
As the foundation for its laughter, 'The Foreigner' asks audiences to accept a lulu of a gimmick. Many comedies do. The problem with gimmicks is that once they're established the playwright must create characters and situations so funny and so convincing that they transcend the gimmickry.