"He's a very sweet sensitive man," Kim says of Holloway, who is best known as Lost's sarcastic, shirtless rebel Sawyer, and who, in his real life, is expecting his first child with wife Yessica.
"When you talk to him about his baby, his face completely lights up," adds Kim. "It's really heartwarming to see that he and Yessica are just completely ready and can't wait."
As for his own family, Kim says they may stay in Hawaii where Lost is filmed, even after the show wraps.
"When we first got here it was like paradise camp," says Kim, who's married and has two sons, ages 12 and 7. "More than any of the other cast we're giving serious consideration to staying here, at least through high school. It's really great for family."
Back from the DeadIn terms of his run on Lost, at the end of last season it looked like Kim's days were numbered, but nobody was happier to learn that his character, Jin, had survived the freighter explosion on the season finale than Kim himself.
The 40-year-old actor tells PEOPLE that he learned of his fate from producers before receiving the script. "They said, 'You're going to read some things that are going to make you question what happened with your character. We're calling to tell you don't worry,' " Kim says.
Going with the flow is something Kim and his fellow Lost stars have come to accept since the production started filming in Hawaii in 2004. Currently in its fifth season, the show will go one more year before concluding in 2010. In the meantime fans can’t wait to see what happens next on Lost – and neither can Kim.
"I get very broad strokes about the show and the future of my character," Kim says. "I kind of like not knowing everything because then when people ask me I can tell them honestly I don’t know instead of being pressed for answers."