Celebrity: Kiefer Sutherland

Product: Sprint Instinct

Ever notice that 24's Jack Bauer always seems to be using a Sprint cellphone? The deal generates plenty of exposure for Sprint, but occasionally strains the series' sense of reality. In an episode late last year, Bauer used a Sprint phone while in Africa. Later, some viewers noted that Sprint's cellular technology, known as CDMA, won't work in Africa.