Gregory E. Jacobs (born August 25, 1963), known by the stage names Shock G and Humpty Hump, is an American musician and rapper, known as the lead vocalist for the hip-hop group Digital Underground. He is also an accomplished pianist, visual artist, and music producer, responsible for D.U.'s The Humpty Dance, 2Pac's breakthrough single I Get Around, and co-producer of 2Pac's debut album 2Pacalypse Now.

Shock-G on Last.fm.