Lindsay Lohan
Adam Rose/FOX
Darren Criss
Adam Rose/FOX
Jane Lynch
Adam Rose/FOX
Matthew Morrison
Adam Rose/FOX
Matthew Morrison and Jayma Mays
Adam Rose/FOX
Jenna Ushkowitz
Adam Rose/FOX
Lea Michele
Adam Rose/FOX
Adam Rose/FOX
Matthew Morrison, Jane Lynch and Jayma Mays
Adam Rose/FOX
Lindsay Lohan and Rex Lee
Adam Rose/FOX
Amber Riley and Chris Colfer
Adam Rose/FOX
Lea Michele
Adam Rose/FOX
Harry Shum Jr., Damian McGinty, Samuel Larsen and Lea Michele
Adam Rose/FOX
Mark Salling
Adam Rose/FOX
Vanessa Lengies and Samuel Larsen
Adam Rose/FOX
Harry Shum Jr. and Damian McGinty
Adam Rose/FOX
Lindsay Lohan
Adam Rose/FOX
Perez Hilton
Adam Rose/FOX
Jane Lynch and Matthew Morrison
Adam Rose/FOX
Dot-Marie Jones
Adam Rose/FOX
Lindsay Lohan and Rex Lee
Adam Rose/FOX
The May 15 and May 22 episodes will be special two-hour events. Here's how Fox describes the May 15 episode: "As the countdown to graduation continues, the kids of New Directions prepare a high-concept routine for Nationals. When Tina (Jenna Ushkowitz) bumps her head, the world of New Directions is turned upside down in her eyes. Then, the New Directions perform at Nationals for celebrity judge Lindsay Lohan (guest-starring as herself)."
In the May 22 season three finale, according to press notes, "graduation is finally here, as McKinley High's class of 2012 looks to the past and present, while contemplating the future."
"Glee" airs Tuesday nights at 8 PM ET on Fox. For more information visit Fox.com/Glee.
