Will (Matthew Morrison, L) and Holly (guest star Gwyneth Paltrow, R) perform 'Singing in the Rain and 'Umbrella' in 'The Substitute' Photo

From: Photos: First Look - Mini-GLEE Kids in 'The Substitute'

GLEE 'The Substitute' Season 2 Episode 7 - When Mr. Schuester gets sick, a substitute teacher (guest star Paltrow) takes over his Spanish class and the glee club, and winds up winning over the whole New Directions clan. Meanwhile, when Sue fills in for Principal Figgins as McKinley's top dog, she tries to flex her power on campus in the all-new 'The Substitute' episode of GLEE airing Tuesday, Nov. 16 (8:00-9:01 PM ET/PT) on FOX.