Complex sentence: Simmons has starred in several films produced or directed by his friend Jason Reitman, including "Thank You for Smoking", "Juno", "Up in the Air", and "Jennifer's Body".
Split into simpler sentences: Simmons has starred in several films produced or directed by his friend Jason Reitman. They include "Thank You for Smoking", "Juno", "Up in the Air", and "Jennifer's Body".