Moira Kelly (Karen) found out she was pregnant after the pilot was shot, but Schwahn didn’t want to write the pregnancy into the show, so they used an array of props to hide her belly. Sheffer thought the way Keith died was “brilliant.”11.Haley has a huge arc surrounding her singing chops because Schwahn overheard Lenz singing in a parking lot and decided to give her character a singing career.12.The court where the Tree Hill basketball games were shot is the same one Michael Jordan played on when he was in school, proving legends really are born in the Tree Hill High gym.3.
Schwahn created Peyton’s infamous album wall in her bedroom because he saw a wall of old movie posters in a theater and thought it looked cool.19.
Johansson filmed Season 1, Episode 12 with pneumonia and was quite high on cough syrup during most of the shots.20.
The most popular season of One Tree Hill was the second season.
It averaged 4.3 millions viewers each week and was the 117th ranked show for the 2004-2005 television season.
James Lafferty didn’t have to fake too much to play Nathan.
The actor was on his high school basketball team before being cast on One Tree Hill.15.Bethany Joy Lenz and Chad Michael Murray were both 22 years old when they first began to play Haley and Lucas respectively, while Sophia Bush and Hilarie Burton were 21 years old at the beginning of the first season.Antwon Tanner, who played Skills Taylor, was the oldest as he was 28 year old during season one.The show title comes from the U2 song “One Tree Hill” from the Joshua Tree album.21.Schwahn was inspired to write the school-shooting episode (Season 3, Episode 16) after hearing someone talk about Columbine and whispering the name.In Season 4, Episode 17, the cast goes to Honey Grove, Texas, to rescue Marvin “Mouth” Mc Fadden (Lee Norris).