Maker: Frito-Lay
Peak Popularity: Mid-2000s
Watch a classic commercial here

FOH, one dimensional, triangular Doritos. These bloated snacks took up more surface area in your mouth, and had a hollow center filled with cheese-flavored air. Do you know how ridiculous that is? Part of the appeal of junk food is the weird ingenuity, and in terms of sheer craziness, 3D Doritos are tough to top. Also, it didn't hurt that Ali Landry starred in the advertisements.