Dean's family have a strong connection to martial arts, with members from previous and current generations gaining 'black-belts' in karate. Following in family tradition, Dean also attained his black-belt when he was only 13 years old.
Dean and his wife Tori, welcomed a baby boy, Liam Aaron McDermott, into the world on March 13, 2007. He weighed 6 lbs, 6 oz. They welcomed a baby girl, Stella Doreen McDermott, on June 6, 2008 (Doreen after Dean's late mother). She weighed 6 lbs, 8 oz. Both children were delivered by C-section.
In 2007 Dean and Tori starred in a reality show called Tori and Dean about setting up and running a bed and breakfast in California. The show also documented Tori's pregnancy and the birth of their child.
Dean is an animal lover, and attended the Much Love Animal Rescues Bow Wow Ciao Benefit at the Serra Retreat in August 2006.
Dean & wife, Tori, participated in the 3rd Annual Royal Plantation Celebrity Golf Classic for charity.
Dean supports the Hollywood All-Star Celebrity Charity Hockey team.
Dean supports the Motion Picture Industry Charitable Alliance.
Dean and Tori met on the set of Mind over Murder.
Dean proposed to Tori in Toronto, Canada while they were riding in a horse-drawn carriage. Tori's engagement ring was a diamond and sapphire ring. The date of the proposal was 27 December 2005 and the couple were married in Fiji on 7 May 2006.
Dean received a Gemini nomination for Best Supporting Actor for his performance in Lives of Girls and Women.
Dean has an elaborate tattoo of Tori's face etched onto his arm.
Dean's ex-wife, Mary Jo Eustace wrote a tell-all book about their marriage. It is titled My Husband Left Me For Tori Spelling. Mary Jo reveals that Dean cried poverty when she asked him to help pay family bills, although at the same time, he could get an elaborate tattoo of Tori's face etched onto his arm.
Dean was married to Mary Jo Eustace from July 1993 until they divorced in February 2006. The couple share two children; son, Jack Montgomery, born in October 1998, and daughter, Lola. She was born in July 2005.
Dean has two golden retrievers.
Dean is an avid golfer.
Dean: (on marrying Tori Spelling) I've never had as much of a desire to get married and make a woman my wife as I've had with her. The feeling is overwhelming. We're soul mates.