Costas was nominated in 1995 and 1996 for a SAG Award for Outstanding Performance by an Ensemble in a Drama Series for Picket Fences.
Costas' parents are named Louise and John.
Costas was maried to actress Talisa Soto from 1997 to 2000.
Costas appeared in a Playboy pictorial in February 1995.
Costas moved to Greece to play soccer when he was only 16 years old. He played midfielder for the team Panathiakos.
The movie Just Desserts on the Hallmark channel reunites Costas with his Picket Fences costar, Lauren Holly. The romantic comedy also features a cameo by celebrity chef Wolfgang Puck.
Wedding Belles reunites Costas with producer David E. Kelly, who was also behind Costas' role in Picket Fences.
Costas is 5'11".
In 1991, People magazine named Costas as one of its 50 Most Beautiful people. In 2000, People named him one of their Awesome Aussies.
The Mandylor name is a variation of Costas' mother's maiden name, Mandylaris.
Costas' brother, Louis Mandylor, is also an actor.
While starring in Players, Costas appeared in 2 public service announcements for NBC's The More You Know. His topics were teen pregnancy and substance abuse.
Costas: Life teaches you lessons. You either pay attention to them or you don't. I really feel like I'm standing my ground now and taking chances. I'm doing things I want to do, not what others want me to do. That means I'm owning myself.
Costas: There are only twenty million people in Australia. Where I come from, Melbourne, you can't get away from family. Here you can escape from it. At home, you can't. You'll see a cousin down one street. Turn a corner and you'll spot an uncle. People stay close together without even trying.
Costas: Sometimes in movies, a nice face can't act, I don't want to have that problem. Hey, I'll blacken my tooth, pull out my eye, anything to get a decent role.
Costas: (About what's not sexy)
Mind games and flashy cars.
(about what is sexy)
A man and a woman having hunger for each other.