MTVOBIT: JJ Jackson, one of the first MTV VJs (as they were known back then) has died. The 62 year old had a heart attack on Wednesday while driving home. Starting out in radio, Jackson first achieved fame in Boston in the 60s, before moving to Los Angeles and KLOS in 1971. His experience in radio and wide knowledge of music quickly cast him as a rock in the schedules at the start-up upstart MTV, a network he stayed with for five years. After leaving MTV, he returned to LA and radio, most recently as afternoon host for KTWV. Divorced, he leaves a daughter and two grandchildren.