His Broadway credits include the starring roles of Danny Zuko in Grease and Marvin in Falsettos.

[5] His father George was a Romanian American born in Chicago to Nicolae and Paraschiva (née Bălan), who had emigrated from Comloșu Mare, Timiș County in the early 20th century.

Zmed's first major acting gig was the role of Johnny in the national touring company production of Grease.

[citation needed] In 1978, Zmed made his television debut, appearing as Marty Decker in an episode of Starsky & Hutch.

He left T.J. Hooker in 1985 when the show moved to CBS, choosing instead to replace Deney Terrio as host of Dance Fever for its final two seasons.

He appeared as Basil (the "floating head") on the soap opera Passions and participated in VH1's Confessions of a Teen Idol.

[13] Following the huge success of John Travolta and Olivia Newton-John in the movie version of Grease, Paramount Pictures quickly secured the rights to a sequel.

Zmed was chosen to play one of the lead roles in Grease 2, Johnny Nogerelli, the new leader of the T-Birds gang.

In 1990, he appeared as the title role in Jesus Christ Superstar at the Birmingham Theatre and as Seymour in Little Shop of Horrors at The Muny.

He appeared as Nick Arnstein in the 1991 production of Funny Girl at the Long Beach Civic Light Opera.

He spoke in a 2016 interview with Las Vegas Magazine about Shatner: I learned so much just watching him...it's a very different energy on camera than onstage.