David Knell

Ben’s (Matthew Perry) latest one-night stand becomes complicated when he discovers that Vivian (guest star Lizzy Caplan) is Crystal’s new assistant. And as Crystal (Allison Janney) forgets a promise she made to Roman after she fall in love with a 50-year-old BMX rider (guest star Toby Huss), the Sunshine Center mascot’s need for a new office tests the limits of Alonzo’s kindness.

Charles is frantic that he and Buddy are not prepared for their physics final. When Joyce and Stephanie come over for a date, Joyce mentions that her brother Duane is a genius in physics. They agree that Duane could tutor Charles and Buddy -- if they in turn get Duane out of his shell. They begin working with him and Charles tries to explain that there is more to college than just studying...that he needs to relax. Charles, Buddy, Stephanie and Joyce gather for a Saturday night and Charles is pleased that they are ready for the physics final -- then Duane walks in...

On the eve of a charity tennis event, using Twitter while driving makes Crystal (Allison Janney) a hazard behind the wheel. After her carelessness disables both Alonzo's tennis partner and Roman, Crystal worries she'll be sued. And as Crystal looks to avoid legal trouble, Ben (Matthew Perry) and Alice conspire to keep Alonzo in the dark about their past. Guest starring Jimmy Connors and Fred Savage.

Charles is frantic that he and Buddy are not prepared for their physics final. When Joyce and Stephanie come over for a date, Joyce mentions that her brother Duane is a genius in physics. They agree that Duane could tutor Charles and Buddy -- if they in turn get Duane out of his shell. They begin working with him and Charles tries to explain that there is more to college than just studying...that he needs to relax. Charles, Buddy, Stephanie and Joyce gather for a Saturday night and Charles is pleased that they are ready for the physics final -- then Duane walks in...