Billy Martin is an American musician best known as the rhythm guitarist and keyboardist of the pop punk band Good Charlotte.
| Movie | Medeski, Martin & Wood: Fly In a Bottle | 2011 |
| Movie | A Sniper's War | 2018 |
| Episode |
Making the Video The Anthem |
2003 |
| Episode |
The Tonight Show Starring Jimmy Fallon Blake Lively, Rachel Maddow, Good Charlotte, Ray Parker Jr. |
2016 |
| Episode |
The Late Late Show with James Corden Mel B, Dr. Phil McGraw, Olivia Munn, Good Charlotte |
2018 |
| Episode |
Undergrads Risk |
2001 |
