A 17-year-old Chris Colfer as Sancho Panza in a production of Don Quixote at Clovis East High School in Clovis, California. Photo credit: Seth Poppel/Yearbook Library
Before he appeared on Glee, Cory Monteith also had parts on shows like Stargate Atlantis, Smallville (pictured above), and Kyle XY.
Dianna Agron played Jenny Budosh, an Aspen-partying rich kid at Hearst College, in a multi-episode stint on the third season of Veronica Mars.
Jane Lynch shills for Frosted Flakes in this commercial from the mid-90s.
Jayma Mays made her TV debut with a 2004 appearance in Matt LeBlanc’s Friends spin-off, Joey.
This is Jenna Ushkowitz’s audition song for Spring Awakening, the Broadway show that starred Glee cast members Lea Michele and Jonathan Groff. Jenna made her Broadway debut in a 1996 revival of The King & I.
Kevin McHale spent a few years in a boy band called NLT (which is short for Not Like Them).
Lea Michele, age 12, discussing her experiences as a child star on Broadway.
Mark Salling plays guitar at the Varsity Revue during his senior year at Lake Highlands High School in Dallas. Photo credit: Seth Poppel/Yearbook Library
Matthew Morrison as a dance instructor in Bob Rizzo’s Simply Funk. Watch a clip of him in action here.