Bad Reputation is the seventeenth episode of the American television series, Glee. The episode premiered on the Fox network on May 4,2010 and it was directed by Elodie Keene, and written by series creator Ian Brennan. In Bad Reputation, cheerleading coach Sue Sylvester is publicly ridiculed when a video of her dancing to Olivia Newton-Johns Physical is posted on YouTube, a salacious list about members of the glee club circulates the school, leading certain members to try to earn themselves a bad reputation. Newton-John guest-stars as herself in the episode, and Molly Shannon makes her first appearance in a recurring role, following their romance in the episode Mash-Up, club members Rachel and Puck are reunited, a decision made by the producers due to the unexpected popularity of the pairing. Bad Reputation was watched by 11.62 million American viewers, darren Franich of Entertainment Weekly and Bobby Hankinson of the Houston Chronicle both considered it a return to form following disappointing episodes. When Kurt steals a video of cheerleading coach Sue Sylvester performing Olivia Newton-Johns Physical to a Jazzercise routine, the video becomes a viral hit and Sue is mortified. In retaliation, she gives Principal Figgins a list she has found, called a glist, the list goes, Quinn, Santana, Puck, Brittany, Jesse, Finn, Mike, Matt and Rachel, from most to least. Figgins tells club director Will Schuester that he must either find the creator of the list, or he will be forced to disband the glee club and suspend all of its members. Will reprimands the club members, and for their weekly club assignment, he has the students find songs with bad reputations and rehabilitate them, performing Vanilla Ices Ice Ice Baby as an example. Sue is laughed at by her co-workers, who have seen the video, in light of her sisters advice, Sue decides to act as a therapist to guidance counselor Emma Pillsbury, informing her that Will has been unfaithful to her. Emma confronts Will in the lounge, publicly shaming him. Next, Kurt confesses to Sue that he is the one who stole her video, expecting to be punished, instead, she thanks him, having recently been contacted by Olivia Newton-John, who had seen Sues video and requested her help remaking the Physical video. The songs re-release gains Sue a position in the top 700 recording artists and she donates her share of the profits to her sisters residential care facility. After apologizing to Emma and presenting her with flowers, Will sees a depressed-looking Quinn in the hallway and realizes that she is responsible for the list. To prevent her from being suspended, Will lies to Figgins that no culprit has been found, but convinces him that as no new lists have been posted, Rachel asks Puck to assist her in the glee club assignment, creating a video for David Geddes Run Joey Run. But she secretly also recruits her ex-boyfriend Finn and her current boyfriend Jesse St. James, triple-casting them in the role of her boyfriend, Joey. When Rachel plays the video in class, all three are surprised, offended and angered by her deception. Jesse breaks up with Rachel as a result, and she sings Bonnie Tylers Total Eclipse of the Heart as the members walk out of the classroom
Molly Shannon makes her first appearance in "Bad Reputation" as Brenda Castle, an alcoholic astronomy teacher and badminton coach.
Olivia Newton-John guest-stars in the episode as herself.