He has since contributed his voice to hundreds of radio and television commercials for clients including Chrysler, Domino's, Pontiac, Canon, Calvin Klein, and Budweiser.
Some of his notable commercial roles include Louie the Lizard for Budweiser and Vinnie the Panda for Fox's Biscuits.
In the 1980s, he performed stand-up comedy in and around New York and co-founded the improvisational group The House Band.
His graphic artwork was well known in New York through Kid Christie, the company he co-founded with Theresa Fiorentino.
As a writer, Christie co-wrote the Meat Loaf albums Midnight at the Lost and Found, and Blind Before I Stop.