Glee Season 2 Episode 2 : Britney/Brittany
New Directions wants to perform a Britney Spears number at the Homecoming Assembly, but Will is reluctant to let them be that edgy. Emma's new boyfriend Carl (John Stamos), a dentist, treats glee club members Brittany, Santana, Rachel and Artie, all of whom experience Britney Spears fantasies while under anesthesia. Artie joins the football team, and Finn is reinstated. Will ultimately okays a Spears number and takes a lead role in the hopes of impressing Emma, but the assembly performance ends in chaos.