Since the Fox series raised its curtain in 2009, full episodes have been devoted to the repertoires of
As we say goodbye to McKinley High School (and the series' awkward post-graduation story lines as well) on Friday night, here's a look back at some notable "Glee" guest stars.
Britney Spears: The "Toxic" singer appeared in 2010's "Britney/Brittany" episode, which had Cheerio Brittany S. Pierce (
Adam Lambert: The
Kristin Chenoweth: Menzel's "Wicked" costar showed up on the series after pleading for a part on the show during her 2009
Carol Burnett: The reason track-suit enthusiast Sue Sylvester (
Ricky Martin: The Latin pop star's character finally brought up a realization that should have been obvious from the get-go: Will Schuester shouldn't be teaching español. Martin's David Martinez stepped in for Will as McKinley's language instructor but not without throwing in a musical number. The gyrating performer memorably performed a Spanglish version of
Neil Patrick Harris: The "How I Met Your Mother" actor guest starred as Will Schuester's archrival and former classmate, Bryan Ryan, turning up as a school board member who threatened to cut funding for the glee club because it had destroyed his life. Harris, ever the showman and magician, did magic tricks in a "Daydream Believer" flashback sequence that pitted Ryan against Will.
Who was your favorite guest star? Sound off in comments.