In 1994, he starred alongside Jennifer Love Hewitt in the short-lived series "The Byrds of Paradise". He worked with Hewitt again in 1998's "Can't Hardly Wait". Green is not related to Bruce Seth Green, who directed some episodes of "Buffy the Vampire Slayer". On occasion, some sources confuse the two and have credited Seth as the director. As an actor in the series, he was close to co-star Alyson Hannigan because they were lovers in the show. He played Daniel "Oz" Osbourne, a calm, mild-mannered band member who gets turned into a werewolf. He is very popular among fans of the series. Green has starred on Fox's "Greg the Bunny" and guest-starred on "The X-Files", "That '70s Show", "Will & Grace", "MADtv", "Reno 911!", "Entourage", "Grey's Anatomy", "The Wonder Years", "Heroes", "The Facts of Life", "The Drew Carey Show", and "My Name Is Earl".