Quinn is getting more anxious by the minute as she expects the baby, plus, Regionals is finally here, but will the Glee Club be able to triumph over Sue Sylvester’s plots?

Mr. Schuester thinks he has gotten the upper hand over Sue; Quinn gets in touch with her “funky” side.

Mr. Scnuester encourages the members of glee club to express themselves using Lady Gaga’s music; Rachel has a life-changing encounter; Tina embraces her inner goth.

Artie mends his relationship with Tina and deals with his physical condition. Neil Patrick Harris guest stars as Bryan Ryan, Will’s former high school rival

A sore throat impacts Rachel’s singing; Kurt tries to impress his father; Puck hopes to elevate his social status.

Mr. Schuester investigates when a salacious list about the glee club members circulates the school; a video surfaces of Olivia Newton-John performing with Sue.

Kurt sets his dad up with an unexpected partner; April (Kristin Chenoweth) returns to save the glee club.

Mr. Schuester is concerned that the guys are disrespecting the women of the glee club; the club members perform some of Madonna’s greatest hits.

Rachel and Finn’s romance hits a rocky patch when she becomes involved with a competitor (guest star Jonathan Groff), forcing Mr. Schuester to have a talk with the competitor’s coach (guest star Idina Menzel).

Quinn’s secret unravels as the sectionals approach, threatening club cohesion at the worst possible time. Meanwhile, Sue’s scheming continues apace (and then some); and Will ponders an important decision as Emma and Ken’s wedding nears. Grace Hitchens: Eve.

Will is concerned that Sue is leaking info, so he visits with a rival club’s instructor (Eve) while the kids check out their competition. Meanwhile, Kurt gives Rachel a makeover, and he may have hidden motives for doing this

Mr. Schuester has the Glee Club split up into pairs to sing their favorite ballad, but when one kid gets sick, he’s forced to step in and winds up in a sticky situation. Meanwhile, Finn has dinner with Quinn’s parents.

Will encourages the Glee Club to support Artie, and asks each of them to perform in a wheelchair. Meanwhile, Kurt and Rachel compete for a big solo. Incoming search terms:flash factory los angeles web design

Inspired the by the students, Will composes a mash-up for a very special occasion. Meanwhile, in a shocking reversal of roles, McKinley High’s cool kids are dethroned in an “icy” fashion, and Sue shows off her softer side in the “Mash-Up” episode of GLEE.

Sue makes the Glee kids compete against each other to sow seeds of dissension, then gets called into Principal Figgins’ office, along with Will. Meanwhile, the kids rally to show their support for Quinn.

Will decides to give New Directions some competition between them by having the boys go against the girls. Terri becomes the school nurse to check on Will.

A new face stirs things up for New Directions when April Rhodes (guest star Kristin Chenoweth) lends her voice to the show.

Kurt joins the football team just to impress his father. Finn and Quinn’s relationship get a shocking development.

Will forms an all-male a cappella group, but when he neglects the glee club, the kids decide to hire a well-known choreographer to coach them. Meanwhile, Mercedes falls in love. Josh Groban appears as himself.

The Glee Club performs in front of the school for the first time.