Another one of the OG Brat Packers was Judd Nelson, who famously played the misunderstood, brooding bad boy in "The Breakfast Club." Basically, he was such a bully he would've enjoyed kicking Ferris Bueller's ass. Nelson rode the Brat Pack fame wave, starring in "St. Elmo's Fire" and the "Billionaire Boys Club." While he didn't quite have the staying power of, say, Rob Lowe, he did have a '90s upsurge when he starred opposite Brooke Shields in "Suddenly Susan." Since then, he's flown under the radar, but it's hard to think of him as anything besides the flannel-loving, conformist-hating kid who never left detention.