- Outside of acting, music is the first thing that entertains Bret. He loves listening to music and watching bands play.
- When he was 15, Bret studied under local acting teacher Sandra Peabody. Impressed with her quick study Bret, she gave him more advanced classes without charging him for them.
- Bret was voted second behind Zachary Levi as USA Today's "Most Likely to Be Breakout Stars" in September 2007.
- Bret's parents encouraged his interest in performing at a young age. He received an electric guitar for his tenth birthday.
- When he was five, Bret sang using a candlestick imitating Poison's lead singer Bret Michaels in the music video "Unskinny Bop".
- Bret has played a TV character named Sam on three different shows: The Loop, Reaper, and a guest-starring role in Law & Order: Special Victims Unit.
- Bret is in featured in People magazine's 2006 "Hottest Bachelors" issue.
- Bret's parents names are Lisa, who is a special educations teacher, and Michael, who is a pharmacist. His step dad's name is Mark. He has a younger sister, Lindsay.
- Bret has been on two episodes of The O.C. which is the show his roommate, Adam Brody, is on. Adam has also been on Bret's show Grounded For Life and The Loop.
- Bret shared an apartment in Los Angeles with good friend and The O.C. actor Adam Brody.
- Bret used to be a busboy.
- Within one month of moving to L.A. Bret landed a role on the show Grounded For Life as Brad O'Keefe.
- Bret's first paying role as an actor was in an independent film that was filmed in Virginia.
- Bret bought his first car, not his parents.
- In high school, Bret was crowned the sophomore homecoming prince.
- Bret played football for through his freshman and sophomore years in high school.
- After graduating from Byrom Elementary School, Bret attended Tualatin High School and graduated in 2000. Both schools are located in Tualatin, Oregon.
- When Bret was in high school, he played a troubled teen in a a production of Eye of God. During high school, he also played "George Gibbs" in Our Town.
- When Bret was in sixth grade, he and his mom participated in the annual production of the "Singing Christmas Tree".
- When Bret was a child he took dance lessons.
- Bret's nickname is Booder.
- In his spare time, Harrison enjoys surfing and playing guitar with his band. He also writes music.
- Bret plays in a band called Big Japan with Adam Brody. The other members are Nathanial Castro on vocals and guitar, and Brad Babinski on bass.
- Bret: What would I sell my soul to the devil for? I don't know man! Eternal happiness. I don't know.
- Bret: (on being typecast as "Sam", having played three Sam's in three different shows) I don't ever think of that, although I probably should. I definitely think you can guide your career in terms of where you want to go.
- Bret: (on chemistry between the "Reaper" cast) It's amazing. On every show there's generally a mix and match in the audition process. They line you up, put two people together and see how it goes. Yet two days after I got the job, we were in Vancouver shooting the pilot and we were like, "Holy Sh*t, this is working."
- Bret: I was never afraid to be too big. A lot of people are afraid of putting themselves out there and looking stupid and making a fool of themselves. Sometimes it doesn't work. But for every three times it doesn't work, it'll work once, and you're just banking on that one time.
- Bret: (on the divorce of his parents) It was pretty tough but I think it taught me. Overcoming that taught me a lot in terms of two things - mainly being forgiving and letting go of things and not holding onto the past and constantly being here, now, and just being in the present.
- Bret: (on learning from good friend Adam Brody's experience in "The O.C.") Just hanging out, I remember what it was like for him when The O.C. launched. Billboards, posters, to see him go through everything. I think I learned along the way.
- Bret: ("that guy" referring to his character in "The Loop") I completely identify with that guy and I think everybody else can identify with it, too. Everybody's trying to juggle working and hanging out.
- Bret: If I can do three comedies and a drama a year, I'd be excited. That'd be perfect. Because drama is challenging and I think it makes your comedy better.
- Bret: I think drama is more intense for me. Comedy comes a little bit more naturally. I like being on a lighter set. You know, constantly joking. For me it's more fun.
- Bret: (on his driving to Los Angeles and trying his luck with acting when he was 17) I just went after what I wanted. Ignorance is bliss. I didn't think of all the variables. I just hopped in my car and drove.
- Bret: Every TV show I've ever been on has had someone recast. Any pilot I've ever done, I'm always thinking, "God I hope it's not me." I think it's the networks way of showing who's boss.
- Bret: (comparing himself to his character Sam from "The Loop") I don't think I'm as neurotic and crazy as Sam, but I do think I relate to the working and the partying. I'm not saying I'm a crazy party animal or anything.
