Del Valle began contributing articles on horror and classic Hollywood movies to magazines including
Video Watchdog,
Cinefantastique,
Scarlet Street,
Diabolique,
Kinoeye,
Little Shoppe of Horrors, and the
UK's
Films and Filming, plus the website RealScreen.com. From 2000 to 2016, Del Valle wrote a web column on film history,
Camp David, for the magazine
Films in Review. Del Valle additionally produced and hosted a series of
cable TV interviews entitled
Sinister Image. His guests included actor
Cameron Mitchell and directors
Russ Meyer and
Curtis Harrington. He also hosted and curated the
Full Moon Features streaming series
Haunted Hollywood in 2020. He began doing audio commentary on movie
home video releases in 1983, and has continued to do them into the 2020s. (See "Audio commentary" below). Del Valle curated the 2006
Los Angeles, California photo exhibit
Nevermore, devoted to the
Edgar Allan Poe films of Vincent Price and
Roger Corman. Additionally, he has worked as a Hollywood talent agent, has done small, sometimes uncredited roles in low-budget films, and was casting director of the 1987 horror anthology film
The Offspring aka
From a Whisper to a Scream. ==Audio commentary==