He appeared in the film Police Academy 3: Back in Training in 1986, and subsequently in the television series Street Legal, Knots Landing as Bill Nolan, and in 1993's The Untouchables as Agent Paul Robbins.

The following year, Elliott landed a recurring role on the hit series Melrose Place, playing Terry Parsons, and a guest appearance in an episode of Seinfeld as "Carl" the anti-abortion furniture mover.

In October 2006, Elliott joined the cast of legal drama Close to Home (2005–2007) as Chief Deputy Prosecutor James Conlon.

[9] In 2012, Elliott also co-starred as Ripp Cockburn, the husband of Kristin Chenoweth's character Carlene, on ABC's comedy-drama series GCB.

In 2015, Elliott guest-starred in the TV drama Scorpion and played actor John Wayne in the film Trumbo.

On March 29, 2019, CBS announced Elliott would be reprising his JAG role of Harmon Rabb, Jr., for a multiple-episode arc in the 10th season of NCIS: Los Angeles.