Rockula is a 1990 comedy film about a vampire under a curse- The tagline is "He's a vampire that hasn't scored in 400 years- tonight's the night!"
It was directed by Luca Bercovici, and co written with Bercovici and Jefery Levy

Jefery Levy

Jefery Levy is an American film and TV director.His work as a director includes the feature films Inside Monkey Zetterland, S.F.W. and Man of God, as well as numerous episodes of shows such as Numb3rs, Ghost Whisperer and CSI: Crime Scene Investigation.-Selected Filmography:*Ghoulies *Rockula...

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Starring as the vampire , Ralph LaVie, is Dean Cameron

Dean Cameron

Dean Cameron is an American television and film actor. He is best known for his role as Francis "Chainsaw" Gremp in the 1987 Mark Harmon comedy Summer School....

 a prolific 1980's comedic actor. Toni Basil

Toni Basil

Antonia Christina Basilotta , better known by her stage name Toni Basil, is an American singer-songwriter, actress, filmmaker, film director, choreographer, and dancer, best known for her multi-million-selling worldwide #1 hit "Mickey" from 1982.-Early life:Basil was born Antonia Christina...

 plays Phoebe LaVie, Ralph's mother.
Bo Diddley

Bo Diddley

Ellas Otha Bates , known by his stage name Bo Diddley, was an American rhythm and blues vocalist, guitarist, songwriter , and inventor...

has somewhat more than a cameo, as Axman, playing in Ralph's band, incidentally named Rockula.