As a contestant who came on the show with no prior dance experience, the sexy Brothers & Sisters star, 34, says he wants someone in a similar situation to win the current season. But he's not very hopeful.
"I'd love to see a surprise, personally, but we kind of all know who is going to win," the season 8 runner-up told PEOPLE at Camp Ronald McDonald for Good Times' Halloween Carnival at the Universal Studios back lot in Los Angeles. "We've known since this season started. Jennifer [Grey] is going to take it. She's really the dancer on the show. We'll see if anyone can step up to the plate in the last few weeks."
Adds Marini of Grey's Dirty Dancing past, "I like to see someone with not a lot of experience try their best, versus someone with a lot of experience. I really appreciate someone like me who's never danced before, coming out and trying."
Marini, who has never been shy about his active sex life, joked that he still likes to practice what he learned in the ballroom. "I dance in the bedroom, baby," he said with a laugh. "Every night."