I've never watched One Tree Hill (I'm not in the target audience), but it is interesting to note the Christian artists they've included in the show.
Bleach - "Good As Gold" - ep. #3.07
Debby Boone - "You Light Up My Life" - ep. #3.02
Tyler Burkum - "End of the Road" - ep. #5.18
The Fray - "How To Save A Life" - ep. #3.17; "Look After You" - ep. #3.20
Group 1 Crew - "Forgive Me" - ep. #5.02
Mat Kearney - "Won't Back Down" - ep. #4.03
Jonny Lang - "Beautiful One" - ep. #1.06
Lifehouse - "Broken" - ep. #5.09
Mae - "Skyline Drive" - ep. #2.11
Plumb - "In My Arms" - ep. #5.17
Robbie Seay Band - "Shine Your Light On Us" - ep. #6.03
Switchfoot - "Dare You To Move" - ep. #1.07; #2.05; "The Blues" - ep. #3.11