Where is Chevy Chase?

Movie	Role
National Lampoon's Vacation (1983)	Clark Griswold
Nothing but Trouble (1991)	Chris Thorne
Caddyshack (1980)	Ty Webb
Dirty Work (1998)	Dr. Farthing
Caddyshack II (1988)	Ty Webb
National Lampoon's Christmas Vacation (1989)	Clark