Mark's favorite color is blue.
Before achieving success in the music industry, Mark had worked as a truck driver.
Mark's past injuries include breaking his foot and once also receiving ten stitches above his eye.
During a concert at SingFest in Singapore, Mark broke up with his girlfriend of four years.
Mark co-hosted a thirty minute infomercial  for a ten-disc set CD collection, on which he was featured twice.
McGrath says he is so often mistaken for actor Ethan Hawke, he frequently signs autographs in his name.
He played on the track and basketball teams during his time in high school.
He owns an 1968 Cadillac Coupe DeVille automobile.
In 1986 he graduated from Corona Del Mar High School.
He was only twelve years of age when his parents divorced.
Mark stands at a height of 6'1".
Mark was the co-host of the 2005 Radio Music Awards on NBC alongside Jamie Pressley.
He was named the "Sexiest Rocker" of 1998 by People magazine.
His favorite TV shows to watch are Jerry Springer and Rikki Lake.
The first concert he ever attended was at the Forum in L.A where The Go Go's and Adam Ant preformed.
He has seventeen body tattoos.
In college Mark's major was communications, he selected it because he reasoned it would be easy as all the football players picked it.
He is Irish Catholic.
He owns three pets: Chopper, Ruby, and Lola (all dogs).
His favorite decade is the '80s.
His favorite beverage is Budweiser beer.
His favorite sports are hockey and boxing.
His favorite sports teams are the LA Kings and LA Lakers.
He says his most embarrassing moment in life was missing a half-court shot at a Laker game for $43,000.
His favorite holiday is St. Patrick's Day.
His favorite movies include: Menace II Society, Goodfellas, Good Will Hunting, and Star Wars.
He sings a duet with Shania Twain called 'Party For Two' which will be on her greatest hits album, avaliable November 9.
Mark: (on the process of creating an album) It's really laborious for us [Sugar Ray] to get songs done because it's truly a collaborative effort. There's five guys in this band and every guy gets his opinion or his music heard. No one writes songs by themselves, so it's a process to get everyone's ideas in coming up with a song.
Mark: The greatest thing about Hollywood is the most talented people don't necessarily make it. I made it as a singer and I can barely sing. I can hit a couple notes and I can get by.
Mark: (defining the reasons behind the soft spot he holds of his '68 Caddie) The elegance, class, and unnecessary hugeness of it all. It also holds a special memory for me cause when I was little my grandma used to take me for rides in it to get ice cream.
Mark: I haven't been to confessional in years - they'd have to close down the church for a week.
Mark: God didn't put me on this earth to be the singer of a band.
Mark: I'm a huge boxing fan. I love the strategy and the combat. I'm not a fighter, but I would love to be a boxer because I love the courage and toughness. I mean, there can be nothing more terrifying than walking into an arena and looking at Mike Tyson in the ring. That's pretty terrifying!