Freddie Prinze Jr., star of movies that seem to always air on cable at weird hours, decided it was high time to tell us all about his terrible, career-upending experience of working with Kiefer Sutherland on season eight of 24. "Kiefer was the most unprofessional dude in the world. That's not me talking trash, I'd say it to his face, I think everyone that's worked with him has said that," Prinze told ABC News.

Apparently, working with Sutherland just ruined him—he had to take time off from acting. "I just wanted to quit the business after that. So, I just sort of stopped," he said.

In the interim, he worked with professional wrestlers.

"I went and worked for Vince McMahon at the WWE for Christ's sake and it was a crazier job than working with Kiefer," Prinze told ABC News. "But, at least he was cool and tall. I didn't have to take my shoes off to do scenes with him, which they made me do. Just put the guy on an apple box or don't hire me next time. You know I'm 6 feet and he's 5'4."

More from TMZ:

Sources connected with Freddie tell TMZ ... the actor claims Kiefer would regularly show up on set drunk ... sitting in his trailer often for hours, as everyone waited. The sources say it messed with the lives of the family of cast and crew.

Freddie, we're told, claims Kiefer was temperamental and got people fired he didn't like, yet "24" producers consistently cow-towed to him ... as one source put it, "All they did was keep rewarding him."

Sutherland's reps, meanwhile, have fired back: "Kiefer worked with Freddie Prinze, Jr. more than five years ago, and this is the first he has heard of Freddie's grievances. Kiefer enjoyed working with Freddie and wishes him the best."

[Image via Getty]