Season 1

1x01: Pilot

1x02: Showmance

1x03: Acafellas

1x04: Preggers

1x05: The Rhodes Not Taken

1x06: Vitamin D

1x07: Throwdown

1x08: Mash-Up

1x09: Wheels

1x10: Ballad

1x11: Hairography

1x12: Mattress

1x13: Sectionals

1x14: Hell-O

1x15: The Power of Madonna

1x16: Home

1x17: Bad Reputation

1x18: Laryngitis

1x19: Dream On

1x20: Theatricality

1x21: Funk

1x22: Journey to Regionals

Season 2

2x01: Audition

2x02: Britney/Brittany

2x03: Grilled Cheesus

2x04: Duets

2x05: The Rocky Horror Glee Show

2x06: Never Been Kissed

2x07: The Substitute

2x08: Furt

2x09: Special Education

2x10: A Very Glee Christmas

2x11: The Sue Sylvester Shuffle

2x12: Silly Love Songs

2x13: Comeback

2x14: Blame It on the Alcohol

2x15: Sexy

2x16: Original Song

2x17: Night of Neglect

2x18: Born This Way

2x19: Rumours

2x20: Prom Queen

2x21: Funeral

2x22: New York

Season 3

3x01: The Purple Piano Project

3x02: I Am Unicorn

3x03: Asian F

3x04: Pot’O Gold

3x05: The First Time

3x06: Mash Off

3x07: I Kissed a Girl

3x08: Hold On to Sixteen

3x09: Extraordinary Merry Christmas

3x10: Yes/No

3x11: Michael

3x12: The Spanish Teacher

3x13: Heart

3x14: On My Way

3x15: Big Brother

3x16: Saturday Night Glee-ver

3x17: Dance With Somebody

3x18: Choke

3x19: Prom-A-Saurus

3x20: Props

3x21: Nationals

3x22: Goodbye