Where is the sun god people?

Apollo was one of the most beloved and worshiped of the Greek gods. Why is he missing from the modern pantheon?

There has been a slew of films / books etc that feature Greek mythology but Apollo has never had much (if any) of a role in them. Why people? He was the most popular god.

He's god of the sun. The sun! Come on people, does it get more important than that?