As an independent composer, Neill scored the Fox primetime animated sitcom "King of the Hill" beginning in 1997, and was the series's primary composer for its thirteen-season run. In 1998, Neill was presented with a BMI TV Music Award for his score work on the show. In 2007, "King of the Hill" was named by "Time" magazine as one of the top 100 greatest television shows of all time. Neill's other notable television credits include "Chicago Hope", "Michael Hayes", "Roughnecks", and "The Simple Life" (for which Neill won an ASCAP Award for his bluegrass-tinged score). Starting in 2014, Neill has been music consultant for Chuck Lorre's Emmy Award winning comedy series, "Mom." For the Amazon Studios series "Mozart in the Jungle", Neill acted as composer, music producer and script consultant. Amazon subsequently released the soundtrack album for "Mozart in the Jungle", which features Neill's orchestral reimagination of Phoenix's "Lisztomania", the series's main title. In 2016, "Mozart in the Jungle" won two Golden Globes and an Emmy, including the Golden Globe for Best Television Series – Musical or Comedy. Neill's distinguished feature film scores include Mike Birbiglia's critically acclaimed "Don't Think Twice" which premiered at the 2016 SXSW Film Festival, and Mike Mills's "20th Century Women", which premiered as the Centerpiece of the 2016 New York Film Festival. The score for "20th Century Women" is notable for its use of late-70s electronic instruments and sounds. Neill also scored Mills's 2010 Academy Award winning film, "Beginners", with composers Brian Reitzell and Dave Palmer. Other feature films include Macky Alston's documentary "The Killer Within", featuring the renowned Kronos Quartet, Sofia Coppola's "Marie-Antoinette", Roman Coppola's films "C.Q." and "A Glimpse Inside The Mind of Charles Swann III", and Silas Howard's film "A Kid Like Jake", starring Jim Parsons. "Like Father" (2019), a film for Netflix starring Kristen Bell, Kelsey Grammer and Seth Rogen, features Neill's Hawaiian-style slack-key guitar playing. "Valley Girl" (2020), from MGM Studios, is a remake of the Nicolas Cage cult classic, re-done as a musical.