Stewart gained international stardom for his leading role as Captain Jean-Luc Picard in Star Trek: The Next Generation (1987–1994), a role he reprised in a series of films and Star Trek: Picard (2020–2023). He starred as Captain Ahab in the USA miniseries Moby Dick (1998), Ebenezer Scrooge in TNT television film A Christmas Carol (1999) and King Henry II in the Showtime made-for-television film The Lion in Winter (2003). He also became known for his comedic appearances on sitcoms Frasier and Extras for which he received a Primetime Emmy Award for Outstanding Guest Actor in a Comedy Series nomination. He also starred as the lead of Blunt Talk (2015–2016). He currently voices Avery Bullock on American Dad!.
Stewart gained international stardom for his leading role as Captain Jean-Luc Picard in Star Trek: The Next Generation (1987–1994), a role he reprised in a series of films and Star Trek: Picard (2020–2023). He starred as Captain Ahab in the USA miniseries Moby Dick (1998) Ebenezer Scrooge in TNT television film A Christmas Carol (1999) and King Henry II in the Showtime made-for-television film The Lion in Winter (2003). He also became known for his comedic appearances on sit,coms Frasier and Extras for which he received a Primetime Emmy Award for Outstanding Guest Actor in a Comedy Series nomination. He also starred as the lead of Blunt Talk (2015–2016). He currently voices Avery Bullock on American Dad!.