In Showtime's television series "Huff", Yelchin played Byrd Huffstodt, the 14-year-old son of the eponymous character (Hank Azaria). In 2004, he guest-starred in the Season Four episode of "Curb Your Enthusiasm" as Stewart, Cheryl David's cousin and a self-described magician who knows a card trick. In 2006, he guest-starred in the "" episode "Tru Love", as a boy who falls in love with his teacher. He also appeared in the "Criminal Minds" episode "Sex, Birth & Death" as Nathan Harris, a boy who has murderous urges towards prostitutes and approaches Dr. Spencer Reid to help him before he actually does kill.