During filming for The Breakfast Club, Judd didn't wash his hair for the entire shoot.
Judd is a fan of Boston sport teams. His favorite baseball team is the Red Sox. His favorite basketball team is the Celtics. Judd's favorite hockey team is the Bruins. His favorite football team is the New England Patriots.
In his spare time, Judd likes to read, ride his motorbike, and play golf. He also enjoys writing.
In 1987, Judd was nominated for the Razzie Award for Worst Actor for: Blue City (1986). In 1988, Judd was nominated for the Razzie Award for Worst Actor for: From the Hip (1987).
In 2005, Judd received the 2005 - Silver Bucket of Excellence Award from the MTV Movie Awards.
Judd performed in an off-Broadway production of Carnal Knowledge.
Judd performed in Lyle Kessler's Wrestlers, alongside Sarah Jessica Parker. He also performed in Lyle Kessler's play Orphans, and the Los Angeles Theater Company production of The Seagull.
Judd was the host of Unmasked: Exposing the Secrets of Deception (2001).
When Judd left Suddenly Susan (1996), he was replaced by his Transformers: The Movie (1986) castmate, Eric Idle.
Judd was once engaged to actress Shannen Doherty.
Judd was one of the nine original members of the 1980's "brat pack", along with Andrew McCarthy, Mare Winningham, Anthony Michael Hall, Demi Moore, Rob Lowe, Molly Ringwald, Emilio Estevez and Ally Sheedy.
Judd appeared in John Parr's St. Elmo's Fire (Man In Motion) music video.
Judd majored in philosophy at the prestigious Haverford College in Pennsylvania, he left the school during his sophomore year.
Judd attended St. Paul's preparatory school in Concord, New Hampshire.
Judd's parents are attorney Leonard Nelson and his wife, Merle Nelson, who is also an attorney and state assemblywoman. He has 2 sisters, Eve and Julie, they are both younger than him.
Judd is 5' 11" (1.80 m) tall.
Judd has a dog named Tally a.k.a. Big Head.
Judd was once a disciple of the famed Stella Adler.
Judd left his role in the series Suddenly Susan (1996) after the tragic death of David Strickland.
In 1988, Judd was nominated for a Golden Globe for his role in Billionaire Boys Club (1987).
Judd Nelson: I think that there's room for everyone. I don't think that if one person succeeds then another must fail. That's lunacy. I'm not sure what the reasons are for my philosophy, maybe it's the fact that if there are ten people doing the same job, we all know how we feel and what our high points and low points are.
Judd: I like being a villain. Villains are more exciting.
Judd: I don't have any blindness when it comes to my money. As an actor, you can get distracted by your work. I do keep an eye on my nest egg, if you will.
Judd: Almost anything makes me laugh, especially jokes at my own expense. And I will never, ever admit to being ticklish anywhere.