Jack in the Box restaurants rebounded in popularity in the mid-1990s, after a highly successful marketing campaign that featured the fictitious
Jack in the Box CEO "Jack" character (voiced by the campaign's creator, Santa Monica advertising executive Dick Sittig), who has a ping pong ball-like head.
In addition, Jack in the Box advertised free car antenna balls with every meal, thus increasing brand awareness.
Often different types of antenna balls will be available if a holiday or major event is approaching.