
Gregory Walter Graffin (born November 6, 1964) is an American singer who is the lead vocalist and only constant member of the punk band Bad Religion, which he co-founded in 1980. He has also released three solo albums.
Graffin obtained his PhD in zoology at Cornell University and has lectured courses in natural sciences at both the University of California, Los Angeles and at Cornell University.
Description above from the Wikipedia article Greg Graffin, licensed under CC-BY-SA, full list of contributors on Wikipedia.

Filmage: The Story of Descendents/All
2013 · as Self

One Nine Nine Four
2009 · as Himself

Punk Rock Summer Camp
1999 · as Himself

Release
1998 · as Bad Religion

Fading West
2013 · as Self

DIESEL
2018 · as Self

Die Toten Hosen - Rock am Ring
2012 · as Vocals

Punk in Drublic Documentary
2021 · as Self

Bad Religion: Along the Way
1990 · as Self

Bad Religion - Punk Rock Songs
2004 · as Self

Bad Religion - Nova Rock 2022
2022 · as Self

Bad Religion: Big Bang
1992 · as Self

The Best of Flipside Video Vol. 1
2001 · as Himself (as Bad Religion)

Bad Religion: The Riot
1996 · as Himself

Bad Religion: New Maps of Hell
2008

Bad Religion - Live at Resurrection Fest 2016
as Self