Jack is back as 24 returns to FOX tonight for a 12-part series called Live Another Day. ET caught up with a few of the stars to get their take on what makes the show so addictive for viewers.
"It's crack cocaine for TV," Benjamin Bratt told us.
"It's a very tense show," said Kiefer Sutherland. "I'm always interested when I run into people who are fans of the show and they tell me why they liked it and it's usually a variety."
Live Another Day sees Jack in London, as he's been in exile for four years. Tune into FOX tonight at 8 ET.
While Jack Bauer is saving the world, Abby Lee Miller is saving the dance floor on tonight's Dancing with the Stars.
The Dance Moms star is guest judging on the ABC competition show and she doesn't plan on pulling any punches.
"I can't tell them they were nice and sweet," said Abby. "I have to tell them what they need to fix."
DWTS is all new tonight at 8/7c on ABC.