David is an American screenwriter, producer and director, perhaps best known for writing the screenplays for The Omen and Bird on a Wire. As writer-director, Seltzer's credits include the 1986 teen tragi-comedy Lucas starring Corey Haim, Charlie Sheen and Winona Ryder, the 1988 comedy Punchline starring Sally Field and Tom Hanks, and 1992's Shining Through starring Melanie Griffith and Michael Douglas. Seltzer was uncredited for his contributions to the 1971 musical film Willy Wonka & the Chocolate Factory. The author of the original book, Roald Dahl, is credited as sole screenwriter; however it has been revealed that Seltzer rewrote 30 percent of Dahl's script, adding such elements as the "Slugworth subplot", music other than the original Oompa Loompa compositions (including Pure Imagination and The Candy Man), and the ending dialogue for the film.