when did he make his film debut?
2004
Gwen Stefani
She made her film debut playing Jean Harlow in Martin Scorsese's "The Aviator" in 2004. 
who wrote the song  wind it up? Gwen Stefani and Pharrell Williams was this song performed anywhere? UNANSWERABLE where was the first mentioned writer born? Fullerton, California
wiki:5335799
Gwen Stefani [SEP] 2004–2006: "Love. Angel. Music. Baby." and film debut
Smith". She made her film debut playing Jean Harlow in Martin Scorsese's "The Aviator" in 2004. Scorsese, whose daughter was a No Doubt fan, showed reciprocal interest in casting Stefani after seeing her picture from a Marilyn Monroe-inspired photo shoot for "Teen Vogue" in 2003. To prepare for the role, Stefani read two biographies and watched 18 of Harlow's films. Shooting her part took four to five days, and Stefani had few lines. Stefani lent her voice to the title character of the 2004 video game "Malice", but the company opted not to use No Doubt band members' voices.