As a writer-director , his films include the comedies `` Caddyshack '' ( 1980 ) , `` National Lampoon 's Vacation '' ( 1983 ) , `` Groundhog Day '' ( 1993 ) , and `` Analyze This '' ( 1999 ) .
He also wrote and directed `` Caddyshack '' ( 1980 ) , `` National Lampoon 's Vacation '' ( 1983 ) , `` Groundhog Day '' ( 1993 ) and `` Analyze This '' ( 1999 ) .