"Dream On" is the 19th episode of the American television series Glee. The episode premiered on the Fox network on May 18, 2010. It was directed by Joss Whedon and written by series creator Brad Falchuk. Neil Patrick Harris guest-stars as former glee club star Bryan Ryan. Working as a school board auditor, he threatens to cut the glee club out of the budget, bitter at never having attained his own show-business dreams. Rachel (Lea Michele) attempts to find her birth mother, and Artie (Kevin McHale) struggles with his desire to walk. The episode title is a reference to Aerosmith's song "Dream on", also performed during the episode.

The episode features cover versions of seven songs, four of which were released as singles, available for digital download, and three of which are included on the soundtrack album Glee: The Music, Volume 3 Showstoppers. "Dream On" was watched by 11.59 million American viewers and received generally positive reviews from critics. Maureen Ryan of the Chicago Tribune, Bobby Hankinson of the Houston Chronicle, Gerrick. D Kennedy of the Los Angeles Times and Todd VanDerWerff of The A.V. Club all deemed it one of the best episodes of the season, while Aly Semigran of MTV, Entertainment Weekly's Tim Stack and Raymund Flandez of The Wall Street Journal praised the musical performances. Blair Baldwin of Zap2it in contrast felt that the songs were inconsistent, and while Harris' appearance was generally well received, Eric Goldman of IGN felt that his storyline was lacking in impact.

Dream On may refer to:

Neil Patrick Harris (born June 15, 1973) is an American actor, singer, director, and magician. He is best known for the title role in Doogie Howser, M.D., the womanizing Barney Stinson in How I Met Your Mother, a fictionalized version of himself in the Harold & Kumar series, and the title role in Joss Whedon's musical web series Dr. Horrible's Sing-Along Blog.

Harris was named as one of Time magazine's 100 most influential people in 2010, and was awarded a star on the Hollywood Walk of Fame in September 2011.

Harris was born in Albuquerque, New Mexico and grew up in Ruidoso, New Mexico. His parents, Sheila and Ron Harris, ran a restaurant. He attended La Cueva High School in Albuquerque, where he acted in school plays and musicals. Harris graduated as an honors student in 1991.

Harris began his career as a child actor and was discovered by playwright Mark Medoff at a drama camp in Las Cruces, New Mexico. Medoff later cast him in his 1988 film Clara's Heart, a drama starring Whoopi Goldberg based on the novel of the same name by Joseph Olshan. Clara's Heart won Harris a Golden Globe nomination. The same year, he starred in Purple People Eater, a children's fantasy.

Patrick Burnet Harris is a retired Church of England bishop who served in two episcopal positions.

He was born on 30 September 1934 and educated at St Albans School and Keble College, Oxford. He was ordained in 1961 and his first post was as a curate at St Ebbes' Oxford after which he became a missionary in South America. He became the Archdeacon of Salta in 1969 before being ordained to the episcopate four years later as Bishop of Northern Argentina. After seven years he returned to England firstly as Rector of Kirkheaton and then Secretary of the Partnership for World Mission where he remained until 1988 when he was appointed Bishop of Southwell, a post he held for 11 years. In retirement he continues to serve as an assistant bishop in the Diocese of Gloucester.

Matthew James Morrison (born October 30, 1978) is an American actor, dancer, musician, and singer-songwriter. He is best known for starring in multiple Broadway and Off-Broadway productions, including his portrayal of Link Larkin in Hairspray on Broadway, and most notably for his Emmy and Golden Globe nominated role as Will Schuester on the Fox television show Glee (2009–present). He has also received a Satellite Award for this role.

Matthew Morrison was born in Fort Ord, California, and raised in Orange County, and is of Scottish heritage. He was part of the Collaborative Arts Project 21 (CAP21) and the Orange County High School of the Arts, while at the Los Alamitos High School campus. While in high school, he did a musical with actress Jodie Sweetin. He attended New York University's Tisch School of the Arts for two years before dropping out and joining the Broadway adaptation of Footloose.

By freshman year of college Morrison already was a regular performer on Broadway. He states in Details "There were all these beautiful, beautiful dancers. As a straight guy I had some room. There were the shared interests in singing and dancing, and I always find dancing with someone very erotic and sexual. I definitely hooked up with a lot of girls when I was a young guy on Broadway. It was fun, I guess. Very joyous and free."