Known both as the lead vocalist of "NSYNC and for his solo career, Justin’s hits include “Cry Me A River,” “SexyBack,” and “Mirrors.” He’s also starred in The Social Network (as Sean Parker), Friends With Benefits (as Dylan Harper), and voiced Branch in the Trolls films. Justin Timberlake is an American singer and actor who achieved fame with the boy band "NSYNC before establishing an equally successful career as a solo performer. His best-known songs include ‘SexyBack,’ ‘Mirrors,’ and ‘Pusher Love Girl.’ Justin Timberlake is an American singer and actor who achieved fame with the boy band "NSYNC before establishing an equally successful career as a solo performer. His best-known songs include ‘SexyBack,’ ‘Mirrors,’ and ‘Pusher Love Girl.’ Timberlake has branched out into an acting career, having most recently starred in The Social Network (2010), Friends with Benefits (2011), and Trouble with the Curve (2012).