VIDEO: Watch All the Performances from GLEE's Season Finale

On last night's Season Finale of FOX's Glee titled "The Untitled Rachel Berry Project", Rachel meets a famous television writer (guest star Kristen Schaal), whose eccentric personality catches Rachel off guard.

Meanwhile, Sam and Mercedes deal with the pressure of commitment as their careers take off, and the time has finally come for Blaine's big showcase with June Dolloway (guest star Shirley MacLaine) at NYADA.

Below, watch all the performances from the episode including:

It's Mercedes' time to shine with her performance of "Shakin My Head" - complete with back up dancer Brittany!

Blaine takes a seat at the piano and delivers a tender, soulful performance of John Legend's "All Of Me."

Sam finds himself surrounded by beautiful women in his audition, and he and the other guys in the running perform the Duran Duran classic "Girls On Film."

Rachel does her best to convey her 'essence' to the television writer (guest star Kristen Schaal) who's writing about her life with a soaring, heartfelt performance of"Glitter in the Air" by Pink.

The time has finally come for Blaine's big showcase with June Dolloway (guest star Shirley MacLaine).

Blaine shocks June Dolloway (guest star Shirley MacLaine) by pulling Kurt on stage, but her disbelief turns to delight when they bring down the house with their performance of "American Boy."

Rachel and the gang storm the streets of New York, dancing in the streets to "Pompeii" as they each move onto the next phases of their lives.

Glee will return for its sixth and final season in 2015.