- In 2004, Andy was nominated for a Golden Satellite Award for "Best Performance by an Actor in a Supporting Role in a Drama Series" for the series Angel.
- Always shy, Andy didn't begin singing until Patti LaBelle invited him onstage at a concert.
- Andy Hallett has appeared in Meredyth Smith's independent movie The Enforcers as Wallace.
- Andy's mother was 20 years old when she gave birth to him.
- The only member of his family to ever actively exercise singing abilities was Andy's grandmother.
- Andy guest starred in 45 episodes before finally being included in the main opening credits in the 80th episode of Angel called Release.
- When Andy was 13 years old he bought a school bus from a friend of his dad's for $500. One night he snuck out in his bus with six of his friends and the cops arrested him because the vehicle was unregistered. He was taken to jail in handcuffs at 14 years old and his mother had to bail him out. Andy said that having his mother show up was worse than actually being in the cell.
- Andy's character Lorne was only supposed to appear on Angel for two episodes, but the fan response was so positive that the writers kept writing him into the show.
- Andy credits his mother with introducing him to the music that he loves and is inspired by.
- Andy has given voice to the Cricket in Geppetto's Secret, a new animated musical version of Pinocchio. He also sings two numbers in the film.
- Andy was shy about revealing his interest in performing when he was younger.
- Andy's favorite foods are cheese & crackers and Greek food.
- Alexis Denisof was a big support for Andy when he arrived on the Angel set without any acting education or experience.
- Andy and Mark Lutz (the Groosalug) are neighbors, and he is one of Andy's closest friends.
- The Angel character, Lorne, is actually inspired by Andy Hallett himself.
- Andy's favorite drink is a Cape Cod cocktail.
- Andy knew Joss Whedon's sister in law from High School.
- Andy Hallett doesn't have any siblings.
- Andy is 6', 2'' (1.88 m) tall.
- Andy Hallett: (To his fans) If you’re telling me that via a television set, or in person, I made you smile or laugh, or perhaps offered a “fun place for you to go” in your mind… I want you to know it works both ways, because you definitely have that effect on me.
