National Lampoon's Christmas Vacation is a 1989 American Christmas comedy film and the third installment in National Lampoon magazine's Vacation film series. Christmas Vacation was directed by Jeremiah S. Chechik, written and co-produced by John Hughes, and starring Chevy Chase, Beverly D'Angelo, and Randy Quaid with supporting roles by Miriam Flynn, William Hickey, Mae Questel, Diane Ladd, John Randolph, E.G. Marshall, Doris Roberts, Juliette Lewis, and Johnny Galecki.

William Edward Hickey was an American actor. He is best known for his Academy Award-nominated role as Don Corrado Prizzi in the John Huston film Prizzi's Honor (1985), as well as Uncle Lewis in National Lampoon's Christmas Vacation (1989) and the voice of Dr. Finkelstein in Tim Burton's The Nightmare Before Christmas (1993).