Photos and Audio: Tonight on GLEE- Joan Jett, Fleetwood Mac and More!

When free-spirited substitute teacher Holly Holliday (guest star Paltrow) fills in for the absent sex-education teacher, she joins forces with Mr. Schuester to teach the kids of New Directions the facts of life.Meanwhile, Emma heads up the Celibacy Club, and she and Dr. Carl (guest star Stamos) address some issues in their personal life in the all-new "Sexy" episode of GLEE airing Tuesday, March 8 (8:00-9:01 PM ET/PT) on FOX. 

Cast: Matthew Morrison as Will Schuester; Jessalyn Gilsig as Terri Schuester; Jane Lynch as Sue Sylvester; Lea Michele as Rachel Berry; Cory Monteith as Finn Hudson; Jayma Mays as Emma Pillsbury; Dianna Agron as Quinn; Chris Colfer as Kurt; Kevin McHale as Artie; Amber Riley as Mercedes; Mark Salling as Puck; Jenna Ushkowitz as Tina; Naya Rivera as SantAna Lopez; Heather Morris as Brittany S. Pierce; Mike O'Malley as Burt Hummel Guest Cast: Gwyneth Paltrow as Holly Holliday; John Stamos as Dr. Carl; Harry Shum as Mike Chang; Chord Overstreet as Sam Evans; Dot Marie Jones as Coach Beiste; Darren Criss as Blaine; Ashley Fink as Lauren Zizes

To date over 13 million GLEE songs have been digitally downloaded, with over 5 million albums sold worldwide. GLEE scored three consecutive #1 releases with GLEE: The Music, Volume 3 Showstoppers, GLEE: The Music, The Power of Madonna and GLEE: The Music, Journey To Regionals. This week four GLEE releases occupy slots within Billboard's top 100 best selling albums Glee: The Music, Volume 3 Showstoppers at #31, Glee: The Music, Volume 1 at #58, GLEE: The Music, Journey To Regionals at #66 and GLEE: The Music, Volume 2 at #81. With all the excitement around Glee's return, it's evident why the New York Times proclaimed GLEE is now a bonafide phenomenon."

Photo Credit: Adam Rose/Fox