Markey has worked with Sonic Youth,[1] Nirvana,[1] Dinosaur Jr,[1] Mudhoney, Redd Kross, Bob Mould, Circle Jerks, The Ramones, Black Flag[1] and the Meat Puppets.
Markey made his first film in 1974 at the age of 11 with his father's hand-wound 8mm Brownie camera, cast from the children of his Santa Monica, California neighborhood.
He also started We Got Power fanzine in 1981 along with Jordan Schwartz, spawning Markey's cinematic Super-8 cult punk scene document The Slog Movie in 1982.
His 2008 documentary The Reinactors was included in international film festivals in Argentina, England, Scotland, Sweden, Switzerland, Denmark, Portugal, Angola, China, Korea, Italy and The Netherlands.
In October 2012, he became a published author as Bazillion Points released the critically acclaimed hard bound book We Got Power: Hardcore Punk Scenes From 1980's Southern California, consisting primarily of the photographic work of Markey and his longtime collaborator Jordan Schwartz.