Complex sentence: Notably, he wrote the screenplay for Jackie Chan's film, "The Medallion" (2003) and produced and appeared as a vampire in "The Twins Effect" (2003) and as Officer Kyle in "Dragon Squad" (2005).
Split into simpler sentences: Notably, he wrote the screenplay for Jackie Chan's film, "The Medallion" (2003) and produced, and appeared as a vampire in, "The Twins Effect" (2003). He also appeared as Officer Kyle in "Dragon Squad" (2005).