A lifelong fan of science fiction "B-movies", Ackerman appeared in more than 210 films, including parts in many monster movies and science fiction films ("Dracula vs. Frankenstein", "The Howling", "The Aftermath", "Scalps", "Return of the Living Dead Part II", "Innocent Blood"), more traditional "imagi-movies" ("The Time Travelers", "Future War"), spoofs and comedies ("Amazon Women on the Moon", "The Wizard of Speed and Time", "Curse of the Queerwolf", "Transylvania Twist", "Hard to Die", "Nudist Colony of the Dead", "Attack of the 60 Foot Centerfold") and at least one major music video ("Michael Jackson's Thriller"). His Bacon number is 2.